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Taxon: Class Aves Linnaeus, 1758 - birds (bird)
Classification by:

Natura - nature
Ref: C. Linnaeus, 1748: 210; Count: 14k;234p;892c;1650o;9995f;116,669g;257,943s;29,212ss;2073v;35,692;112e; ‡2o;20f;119g;518s;110ss;1v;7; †6p;92c;638o;3910f;18,946g;6869s;207ss;2v;496;14e
   actualia - actual entities
  Ref: A. Voltolini, 2006: 44 (note 19) [assumed position]; Count: 14k;234p;892c;1650o;9995f;116,669g;257,938s;29,212ss;2073v;35,692;112e; ‡2o;20f;119g;518s;110ss;1v;7; †6p;92c;638o;3910f;18,946g;6869s;207ss;2v;496;14e
     Mundus Plinius - physical world
    Ref: C. Linnaeus, 1758: 5 [indirect position]; 24 Apr 2014.; Count: 14k;234p;892c;1650o;9995f;116,669g;257,938s;29,212ss;2073v;35,690;112e; ‡2o;20f;119g;518s;110ss;1v;7; †6p;92c;638o;3910f;18,946g;6869s;207ss;2v;496;14e
       naturalia - natural bodies
      Ref: C. Linnaeus, 1758: 6 [implicit position]; Count: 8k;234p;892c;1650o;9919f;116,659g;257,514s;29,212ss;2042v;11; ‡2o;20f;119g;518s;110ss;1v; †6p;92c;638o;3910f;18,946g;6869s;207ss;2v;104
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
        Ref: J. Wiemann et al., 2020: [13] [validation] [inferred position]; Count: 6k;234p;417c;1642o;9919f;116,616g;254,287s;29,210ss;2014v;11; ‡2o;20f;119g;518s;110ss;1v; †6p;92c;637o;3910f;18,937g;6829s;207ss;2v;104
           Clade neomura Cavalier-Smith, 1987
          Ref: T. Cavalier-Smith, 2002b: 297 [inferred position]; Count: 6k;89p;346c;1486o;9421f;113,071g;237,963s;28,809ss;1996v;4; ‡2o;20f;119g;518s;110ss;1v; †6p;92c;637o;3909f;18,930g;6820s;207ss;2v;104
             Domain Eukaryota Chatton, 1925 - eukaryotes
            Ref: P.M. Kirk et al., 2008: 248 [indirect position]; 19 Sep 2015.; Count: 6k;84p;336c;1467o;9389f;112,944g;237,517s;28,809ss;1996v;4; ‡2o;20f;119g;518s;110ss;1v; †6p;92c;637o;3909f;18,930g;6820s;207ss;2v;104
               Clade discaria Cavalier-Smith, 2021
              Ref: T. Cavalier-Smith, 2022(2021) (alt.): table 2 (p. 564), fig. 11 [new taxon] [implicit position]; Count: 5k;83p;335c;1466o;9387f;112,804g;237,492s;28,809ss;1996v;4; ‡2o;20f;119g;518s;110ss;1v; †6p;91c;635o;3889f;18,747g;6734s;201ss;2v;104
                 Clade dorsates Cavalier-Smith, 2021
                Ref: T. Cavalier-Smith, 2022(2021) (alt.): table 2 (p. 564), fig. 11 [new taxon]; Count: [p] 3k;56p;189c;856o;7321f;90,809g;216,442s;28,317ss;507v;3; ‡2o;20f;118g;514s;110ss;1v; †4p;71c;532o;3372f;14,514g;5587s;107ss;2v;104 [26 Jan 2024]
                   Clade podiates Cavalier-Smith, 2012
                  Ref: T. Cavalier-Smith, 2022(2021) (alt.): table 2 (p. 564), fig. 11; Count: [p] 3k;56p;188c;855o;7319f;90,805g;216,434s;28,317ss;507v;3; ‡2o;20f;118g;514s;110ss;1v; †4p;71c;532o;3372f;14,514g;5587s;107ss;2v;104 [26 Jan 2024]
                     Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                    Ref: A.G.B. Simpson et al., 2020: [97] [validation] [indirect position]; Cavalier-Smith, 2022(2021): fig. 11.; Count: [p] 3k;56p;185c;852o;7314f;90,799g;216,429s;28,317ss;507v;3; ‡2o;20f;118g;514s;110ss;1v; †4p;71c;532o;3372f;14,514g;5587s;107ss;2v;104 [26 Jan 2024]
                       Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                      Ref: Brown, 2013: 7 [new taxon] [implicit position]; Cavalier-Smith, 2021: fig. 11.; Count: [p] 3k;55p;178c;833o;7260f;90,637g;216,147s;28,315ss;507v;3; ‡2o;20f;118g;514s;110ss;1v; †4p;71c;532o;3372f;14,514g;5587s;107ss;2v;104 [26 Jan 2024]
                         Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
                        Ref: A.G.B. Simpson & M. Medina, 2020: [103] [validation] [indirect position]; Cavalier-Smith, 2022(2021): fig. 11.; Count: [p] 3k;55p;176c;831o;7257f;90,628g;216,136s;28,315ss;507v;3; ‡2o;20f;118g;514s;110ss;1v; †4p;71c;532o;3372f;14,514g;5587s;107ss;2v;104 [26 Jan 2024]
                           Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                          Ref: L. Tedersoo et al., 2018: 154 [implicit position]; Cavalier-Smith, 2022(2021): fig. 11.; Count: [p] 1k;33p;97c;589o;6320f;81,312g;213,784s;28,307ss;483v;3; ‡2o;20f;118g;514s;110ss;1v; †4p;70c;531o;3371f;14,028g;5578s;107ss;2v;104 [25 Aug 2019]
                             Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                            Ref: T. Cavalier-Smith, 2013(2012): 156 [inferred position]; 19 Jan 2016.; Count: [p] 1k;33p;96c;586o;6309f;81,281g;213,736s;28,307ss;483v;1; ‡2o;20f;118g;514s;110ss;1v; †4p;70c;531o;3371f;14,028g;5578s;107ss;2v;104 [25 Aug 2019]
                               Kingdom Animalia Linnaeus, 1758 - animals
                              Ref: T. Cavalier-Smith, 2013(2012): 156 [implicit position]; Count: [p] 33p;94c;583o;6304f;81,226g;213,669s;28,307ss;482v;1; ‡2o;20f;118g;514s;110ss;1v; †4p;70c;531o;3371f;14,028g;5578s;107ss;2v;104
                                 Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
                                Ref: G. Giribet & G.D. Edgecombe, 2019: 168 (fig. 1a) [inferred position]; Giribet & Edgecombe, 2019: fig. 1a.; Count: 31p;88c;548o;6139f;80,463g;213,119s;28,288ss;471v;1; ‡2o;20f;118g;514s;110ss;1v; †2p;64c;502o;3074f;12,528g;5324s;107ss;2v;104
                                   Subkingdom Bilateria Hatschek, 1888 - bilaterians
                                  Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 36) [indirect position]; Giribet & Edgecombe, 2019: fig. 1a.; Count: 29p;82c;525o;5902f;79,571g;212,382s;28,283ss;463v;1; ‡2o;20f;118g;514s;110ss;1v; †2p;59c;488o;3061f;12,404g;5228s;107ss;2v;104
                                     Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
                                    Ref: G. Giribet & G.D. Edgecombe, 2019: 168 (fig. 1b) [implicit position]; Giribet & Edgecombe, 2019: fig. 1b.; Count: 28p;80c;523o;5878f;79,485g;212,360s;28,283ss;463v;1; ‡2o;20f;118g;514s;110ss;1v; †1p;56c;488o;3057f;12,384g;5206s;107ss;2v;104
                                       Infrakingdom Deuterostomia Grobben, 1908
                                      Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 48) [indirect position]; Giribet & Edgecombe, 2019: fig. 1b.; Count: [p] 3p;20c;197o;1300f;10,492g;62,283s;12,703ss;308v;1; ‡2o;19f;115g;413s;102ss;1v; †1p;29c;306o;1441f;8205g;3464s;75ss;1v;104 [27 Apr 2019]
                                         Phylum Chordata Bateson, 1885 - chordates
                                        Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 48); Giribet & Edgecombe, 2019: fig. 1b.; Count: 11c;156o;1139f;9946g;61,892s;12,695ss;306v;1; ‡2o;19f;115g;413s;102ss;1v; †8c;249o;1419f;8062g;3411s;70ss;1v;104
                                           Subphylum Craniata auct.
                                          Ref: R. van der Laan, 2018: 15; Nelson et al., 2016: fig. (p. 14).; Count: 8c;149o;1115f;9855g;61,692s;12,691ss;306v;1; ‡2o;19f;115g;413s;102ss;1v; †7c;247o;1419f;7799g;3409s;68ss;1v;104
                                             Infraphylum Vertebrata Lamarck, 1801 - vertebrates
                                            Ref: R. van der Laan, 2018: 15; Nelson et al., 2016: fig. (p. 14).; Count: 7c;148o;1114f;9850g;61,616s;12,691ss;306v;1; ‡2o;19f;115g;413s;102ss;1v; †7c;246o;1418f;7796g;3406s;68ss;1v;104
                                               Clade Pan-Gnathostomata Downs 2020
                                              Ref: J.P. Downs, 2020: [669]; ix [new taxon] [implicit position]; Count: 6c;147o;1111f;9840g;61,573s;12,691ss;306v;1; ‡2o;19f;115g;413s;102ss;1v; †7c;246o;1414f;7789g;3401s;68ss;1v;104
                                                 Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
                                                Ref: J.S. Nelson et al., 2016: 34 [inferred position]; Downs, 2020: [669]; Nelson et al., 2016: fig. (p. 14).; Count: 6c;147o;1111f;9840g;61,573s;12,691ss;306v;1; ‡2o;19f;115g;413s;102ss;1v; †2c;218o;1315f;7524g;3192s;68ss;1v;104
                                                   [crown] Clade Eugnathostomata
                                                  Ref: J.S. Nelson et al., 2016: 40; Count: 6c;147o;1111f;9840g;61,573s;12,691ss;306v;1; ‡2o;19f;115g;413s;102ss;1v; †1c;205o;1250f;7361g;3128s;68ss;1v;104
                                                     Clade Pan-Osteichthyes Rowe 2004 [Moore & Near 2020]
                                                    Ref: J.A. Moore & T.J. Near, 2020: [681] [indirect position]; Count: 5c;133o;1044f;9647g;60,414s;12,689ss;306v;1; ‡2o;19f;115g;413s;102ss;1v; †171o;1123f;7067g;3069s;68ss;1v;104
                                                       Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
                                                      Ref: J.A. Moore & T.J. Near, 2020: [685]; Count: 5c;133o;1044f;9647g;60,414s;12,689ss;306v;1; ‡2o;19f;115g;413s;102ss;1v; †170o;1119f;7061g;3069s;68ss;1v;104
                                                         Clade Pan-Sarcopterygii
                                                        Ref: K. de Queiroz et al., 2020: x; [Betancur-R et al., 2017: fig. 1].; Count: 3c;67o;531f;5078g;31,849s;12,155ss;303v;1; ‡2o;19f;112g;392s;98ss;1v; †126o;847f;6382g;2841s;68ss;1v;104
                                                           Clade Sarcopterygii Romer, 1955
                                                          Ref: K. de Queiroz et al., 2020: x; Count: 3c;67o;531f;5078g;31,849s;12,155ss;303v;1; ‡2o;19f;112g;392s;98ss;1v; †126o;847f;6382g;2841s;68ss;1v;104
                                                             [Clade] Dipnotetrapodomorpha Nelson, 2006
                                                            Ref: J.S. Nelson, 2006: 87 [inferred rank] [implicit position]; Betancur-R et al., 2017: fig. 1.; Count: -
                                                               Clade Rhipidistia Cope, 1887
                                                              Ref: J.S. Nelson et al., 2016: fig. (p. 102); Count: 3c;66o;530f;5077g;31,847s;12,155ss;303v;1; ‡2o;19f;112g;392s;98ss;1v; †122o;834f;6325g;2807s;68ss;1v;104
                                                                 Clade Tetrapodomorpha Ahlberg, 1991
                                                                Ref: J.S. Nelson, 2006: 465; Nelson et al., 2016: fig. (p. 102); Mondéjar-Fernández, 2019: fig. 19B.; Count: 3c;65o;527f;5074g;31,841s;12,150ss;303v;1; ‡2o;19f;112g;392s;98ss;1v; †121o;822f;6314g;2805s;68ss;1v;104
                                                                   Clade Osteolepidida Boulenger 1901 [Cloutier & Ahlberg 1996]
                                                                  Ref: R. Cloutier & P.E. Ahlberg, 1996: 468; Benton, 2015: box 3.7 (p. 74).; Count: †4o;18f;53g;35s
                                                                     Clade Eotetrapodiformes Coates & Friedman, 2010
                                                                    Ref: M.J. Benton, 2015: box 3.7 (p. 74); Count: †3o;5f;28g;25s
                                                                       [crown] Clade Elpistostegalia Camp & Allison, 1961
                                                                      Ref: M.J. Benton, 2015: box 3.7 (p. 74); Count: †3o;5f;28g;25s
                                                                         Clade Stegocephali Cope 1868 [Laurin 2020]
                                                                        Ref: M. Laurin, 2020: [741] [indirect position]; Wiki(31 Mar 2025).; Count: †3o;4f;26g;25s
                                                                           Clade Labyrinthodontia Owen 1859 [Laurin 2020]
                                                                          Ref: M. Laurin, 2020: [747]; Count: †3o;4f;26g;25s
                                                                             Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
                                                                            Ref: M. Laurin, 2020: [759]; Count: †3o;4f;26g;25s
                                                                               Clade Pan-Amniota Rowe 2004 [Laurin & Smithson 2020]
                                                                              Ref: M. Laurin & T.R. Smithson, 2020: [789]; Count: †3o;4f;26g;25s
                                                                                 Clade Batrachosauria
                                                                                Ref: M.J. Benton, 2015: box 4.5 (p. [110]) [indirect position]; Count: 2c;62o;466f;4549g;25,180s;12,080ss;303v;1; ‡2o;19f;112g;388s;98ss;1v; †114o;750f;6217g;2752s;68ss;1v;104
                                                                                   Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
                                                                                  Ref: M. Laurin & R.R. Reisz, 2020: [793] [indirect position]; Benton, 2015: box 4.5 (p. [110]).; Count: -
                                                                                     Class Reptilia Linnaeus, 1758 - reptiles
                                                                                    Ref: M.J. Benton, 2015: 438 [implicit position]; Benton, 2015: box 5.1 (p. 124).; Count: 35o;301f;3344g;20,060s;7724ss;1v;1; ‡2o;7f;60g;278s;65ss; †54o;314f;1655g;945s;3ss;104
                                                                                       [Clade] Eureptilia Olson, 1947
                                                                                      Ref: M.J. Benton, 2015: 438 [inferred rank]; Benton, 2015: box 5.1 (p. 124).; Count: 35o;301f;3344g;20,060s;7724ss;1v;1; ‡2o;7f;60g;278s;65ss; †51o;300f;1574g;920s;3ss;104
                                                                                         Clade Romeriida Gauthier, Kluge & Rowe, 1988
                                                                                        Ref: R.V. Hill, 2005: fig. 5; Count: [s] 35o;301f;3344g;20,060s;7724ss;1v;1; ‡2o;7f;60g;278s;65ss; †51o;299f;1572g;919s;3ss;104
                                                                                           Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
                                                                                          Ref: J.A. Gauthier & K. de Queiroz, 2020: [1033] [validation] [indirect position]; Count: 35o;301f;3344g;20,060s;7724ss;1v;1; ‡2o;7f;60g;278s;65ss; †51o;298f;1570g;919s;3ss;104
                                                                                             Clade Neodiapsida Benton 1985
                                                                                            Ref: M.J. Benton, 2015: box 5.1 (p. 124) [implicit position]; Benton et al., 2015: 52.; Count: 35o;301f;3344g;20,060s;7724ss;1v;1; ‡2o;7f;60g;278s;65ss; †48o;292f;1559g;913s;3ss;104
                                                                                               Clade Pan-Archelosauria W.G. Joyce, J. Anquetin, E. Cadena, J. Claude, I.G. Danilov, S.W. Evers, ..., J.F. Parham 2021, sedis mutabilis
                                                                                              Ref: RegNum, 2020-present: [29 Jul 2023] [nominal taxon] [indirect position]; Joyce et al., 2021: fig. 1b; Benton, 2015: box 5.1 (p. 124).; Count: 33o;219f;2253g;9985s;7337ss;1v; ‡2o;7f;59g;272s;65ss; †45o;252f;1457g;840s;3ss;104
                                                                                                 Clade Archelosauria N.G. Crawford, J.F. Parham, A.B. Sellas, B.C. Faircloth, T.C. Glenn, T.J. Papenfuss, ..., W.B. Simison 2015 [W.G. Joyce, J. Anquetin, E. Cadena, J. Claude, I.G. Danilov, S.W. Evers, ..., J.F. Parham 2021]
                                                                                                Ref: RegNum, 2020-present: [27 Jul 2023] [nominal taxon] [indirect position]; Joyce et al., 2021: 7, fig. 1b; Simões et al., 2022: fig. 1.; Count: 33o;219f;2253g;9985s;7337ss;1v; ‡2o;7f;59g;272s;65ss; †45o;252f;1457g;840s;3ss;104
                                                                                                   Clade Pan-Archosauria Gauthier 2020
                                                                                                  Ref: J.A. Gauthier, 2020: [1175] [new taxon] [indirect position]; Joyce et al., 2021: fig. 1b.; Count: 32o;205f;2160g;9642s;7166ss;1v; ‡2o;7f;58g;262s;62ss; †45o;231f;1422g;813s;3ss;104
                                                                                                     Clade Archosauromorpha von Huene 1946 [Gauthier 2020]
                                                                                                    Ref: J.A. Gauthier, 2020: [1179]; Count: 32o;205f;2160g;9642s;7166ss;1v; ‡2o;7f;58g;262s;62ss; †45o;231f;1421g;812s;3ss;104
                                                                                                       Clade Crocopoda Ezcurra 2016
                                                                                                      Ref: Ezcurra, 2016: 284 [new taxon] [implicit position]; Ezcurra, 2016: fig. 57; Ezcurra et al., 2020: ext. data fig. 4.; Count: 32o;205f;2160g;9642s;7166ss;1v; ‡2o;7f;58g;262s;62ss; †44o;229f;1410g;798s;3ss;104
                                                                                                         Clade Archosauriformes Gauthier 1994 [Gauthier 2020]
                                                                                                        Ref: M.D. Ezcurra et al., 2020: ext. data fig. 4; Count: 32o;205f;2160g;9642s;7166ss;1v; ‡2o;7f;58g;262s;62ss; †41o;226f;1387g;786s;3ss;102
                                                                                                           Clade Crurotarsi Sereno & Arcucci 1990
                                                                                                          Ref: S.J. Nesbitt, 2011: 192 [implicit position]; Nesbitt, 2011: fig. 51.; Count: 32o;205f;2160g;9642s;7166ss;1v; ‡2o;7f;58g;262s;62ss; †40o;222f;1368g;778s;3ss;96 [1 Apr 2017]
                                                                                                             Clade Archosauria Cope 1869 [Gauthier & Padian 2020]
                                                                                                            Ref: J.A. Gauthier & K. Padian, 2020: [1187] [validation] [indirect position]; Nesbitt, 2011: fig. 51.; Count: 32o;205f;2160g;9642s;7166ss;1v; ‡2o;7f;58g;262s;62ss; †39o;221f;1359g;769s;3ss;93
                                                                                                               Clade Pan-Aves Gauthier & de Queiroz 2001 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                                                                              Ref: M.D. Ezcurra et al., 2020: Methods (p. [1]) [validation]; Ezcurra et al., 2020: ext. data fig. 4.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †32o;182f;1113g;611s;3ss;51
                                                                                                                 Clade Ornithodira Gauthier 1986 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                                                                                Ref: M.D. Ezcurra et al., 2020: Methods (p. [1]) [validation]; Ezcurra et al., 2020: ext. data fig. 4.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †32o;182f;1113g;611s;3ss;51
                                                                                                                   Clade Dinosauromorpha Benton 1985 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                                                                                  Ref: M.D. Ezcurra et al., 2020: Methods (p. [1]) [validation]; Ezcurra et al., 2020: ext. data fig. 4.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †31o;160f;1048g;584s;3ss;34
                                                                                                                     Clade Dinosauriformes Novas 1992 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                                                                                    Ref: M.D. Ezcurra et al., 2020: Methods (p. [1]) [validation]; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †31o;160f;1048g;584s;3ss;34
                                                                                                                       Clade Dracohors Cau 2018
                                                                                                                      Ref: A. Cau, 2018: 7 [new taxon] [implicit position]; Cau, 2018: fig. 3.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †31o;159f;1047g;583s;3ss;34
                                                                                                                         Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
                                                                                                                        Ref: M.C. Langer et al., 2020: [1209] [validation] [indirect position]; Ezcurra et al., 2020: ext. data fig. 4.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †31o;158f;1040g;577s;3ss;17
                                                                                                                           Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
                                                                                                                          Ref: J.A. Gauthier et al., 2020: [1219]; Novas et al., 2021: fig. 1.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †30o;139f;870g;503s;3ss;9
                                                                                                                             Clade Eusaurischia Padian et al. 1999
                                                                                                                            Ref: F.E. Novas et al., 2021: 12; Novas et al., 2021: fig. 1.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †29o;138f;863g;498s;3ss;6
                                                                                                                               Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
                                                                                                                              Ref: D. Naish et al., 2020: [1235] [indirect position]; Novas et al., 2021: fig. 1.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;119f;611g;336s;3ss;3
                                                                                                                                 Clade Neotheropoda Bakker 1986 [Sereno 1998]
                                                                                                                                Ref: F.E. Novas et al., 2021: 3; Novas et al., 2021: fig. 1.; Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;119f;609g;335s;3ss;3
                                                                                                                                   Clade Averostra Paul 2002
                                                                                                                                  Ref: R.N. Martínez & C. Apaldetti, 2017: 502 (fig. 11); Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;117f;593g;326s;3ss;2
                                                                                                                                     Clade Tetanurae Gauthier 1986
                                                                                                                                    Ref: C. Hendrickx et al., 2015: 3 (fig. 1); Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;114f;563g;317s;3ss;2
                                                                                                                                       Clade Orionides Carrano, Benson & Sampson 2012
                                                                                                                                      Ref: C. Hendrickx et al., 2015: 11 (fig. 4); Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;114f;554g;306s;3ss;2
                                                                                                                                         Clade Avetheropoda Paul 1988 [Padian et al. 1999]
                                                                                                                                        Ref: C. Hendrickx et al., 2015: 11 (fig. 4); Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;111f;533g;287s;3ss;2
                                                                                                                                           Clade Coelurosauria Huene 1914 [Gauthier 1986]
                                                                                                                                          Ref: C. Hendrickx et al., 2015: 3 (fig. 1); Count: [s] 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;107f;505g;256s;3ss;1
                                                                                                                                             Clade Tyrannoraptora Sereno 1999, nom. cl. inval.
                                                                                                                                            Ref: T.R. Holtz Jr. & H. Osmólska, 2004: fig. S.2; Count: [s] 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;107f;498g;250s;3ss;1
                                                                                                                                               Clade Maniraptoriformes Holtz 1995 [Holtz 1996]
                                                                                                                                              Ref: T.R. Holtz Jr. & H. Osmólska, 2004: fig. S.2; Count: [s] 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;104f;469g;238s;3ss;1
                                                                                                                                                 Clade Maniraptora Gauthier 1986
                                                                                                                                                Ref: C. Hendrickx et al., 2015: 13 (fig. 5); Count: [s] 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;102f;457g;226s;3ss;1
                                                                                                                                                   Clade Pennaraptora Foth et al. 2014
                                                                                                                                                  Ref: C. Hendrickx et al., 2015: 13 (fig. 5); Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †28o;98f;427g;203s;3ss;1
                                                                                                                                                     Clade Paraves Sereno 1997 [Sereno 1998]
                                                                                                                                                    Ref: C. Hendrickx et al., 2015: 13 (fig. 5); Count: 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †27o;93f;400g;183s;3ss;1
                                                                                                                                                       Clade Avialae Gauthier 1986
                                                                                                                                                      Ref: C. Hendrickx et al., 2015: 3 (fig. 1); Count: [s] 31o;202f;2151g;9617s;7150ss;1v; ‡2o;7f;57g;261s;62ss; †27o;91f;359g;173s;3ss
                                                                                                                                                         [Class Aves Linnaeus, 1758 - birds] see Subclass Aves Linnaeus, 1758
                                                                                                                                                        Ref: J.K. O'Connor et al., 2010: 312 [indirect position]; Count: †4o;4f
                                                                                                                                                           [Order †Caenagnathiformes Sternberg, 1940]
                                                                                                                                                          Ref: 2003; Count: -
                                                                                                                                                           [Order Carinatæ Merrem, 1813]
                                                                                                                                                          Ref: E.R. Lankester, 1877: 453; Count: -
                                                                                                                                                           [Order †"Ichthornithiformes"] see Order Ichthyornithiformes Marsh, 1873
                                                                                                                                                          Ref: J.J. Sepkoski Jr., 2002: 320; Count: -
                                                                                                                                                           [Genus Leptopus Fraser, 1845, nom. illeg.]
                                                                                                                                                          Ref: S.A. Neave, [2005]: 18 May 2008 [nominal taxon] [implicit position]; Count: -
                                                                                                                                                           Order †Limnornithiformes Kessler & Jurcsák, 1984, nom. illeg.
                                                                                                                                                          Ref: 2003; Count: †2f
                                                                                                                                                           Order †Praeornithiformes Rautian, 1978
                                                                                                                                                          Ref: 2003; Count: †1f
                                                                                                                                                           Family †Ptenopodiscidae
                                                                                                                                                          Ref: 2003; Count: -
                                                                                                                                                           [Order Ratitæ (Merrem, 1813)]
                                                                                                                                                          Ref: E.R. Lankester, 1877: 453; Count: -
                                                                                                                                                           [Genus †Scanirnis]
                                                                                                                                                          Ref: J.J. Sepkoski Jr., 2002 [rough position]; Count: -
                                                                                                                                                           Order †Sinosauropterygiformes Ji & Ji, 1996
                                                                                                                                                          Ref: 2003; Count: -
                                                                                                                                                           Order †Yandangithformes
                                                                                                                                                          Ref: 2003; Count: -
                                                                                                                                                           0.1.0 [Genus †Rahona Forster, Sampson, Chiappe & Krause, 1998, nom. illeg.] see Genus Rahonavis Forster, Sampson, Chiappe & Krause, 1998
                                                                                                                                                          Ref: 1999 [indirect position]; Count: -
                                                                                                                                                           1.0 [Subclass †Archaeornithes Gadow, 1893] see Superorder Archaeornithes Gadow, 1893
                                                                                                                                                          Ref: R.L. Carroll, 1988: 624; Count: †6o;2f
                                                                                                                                                           1.0 [Subclass †"Archeornithes"] see Subclass Archaeornithes Gadow, 1893
                                                                                                                                                          Ref: 1990; Count: -
                                                                                                                                                           1.0 [Subclass †Sauriurae Haeckel, 1866] see Subclass Archaeornithes Gadow, 1893
                                                                                                                                                          Ref: E.N. Kurochkin, 1996: 22; Count: -
                                                                                                                                                           1.0 [Order Saururæ]
                                                                                                                                                          Ref: E.R. Lankester, 1877: 453; Count: -
                                                                                                                                                           2.2.2.0 [Subclass Pygostylia Chiappe, 2002] see Clade Pygostylia Chatterjee 1997 [Chiappe 2001]
                                                                                                                                                          Ref: M.J. Benton, 2005: 398; Count: -
                                                                                                                                                           2.2.2.2.2.2 [Order Accipitres Linnaeus, 1758] see Suborder Accipitres (C. Linnaeus, 1758)
                                                                                                                                                          Ref: C. a Linné, 1766: 121; Count: -
                                                                                                                                                           2.2.2.2.2.2 [Order Anseres Linnaeus, 1758] see Suborder Anseres Linnaeus, 1758
                                                                                                                                                          Ref: C. a Linné, 1766: 194; Count: -
                                                                                                                                                           2.2.2.2.2.2 [Order Gallinae Linnaeus, 1758]
                                                                                                                                                          Ref: C. a Linné, 1766: 267; Count: -
                                                                                                                                                           2.2.2.2.2.2 [Order Grallae Linnaeus, 1758]
                                                                                                                                                          Ref: C. a Linné, 1766: 230; Count: -
                                                                                                                                                           2.2.2.2.2.2 [Subclass Ornithurae Haeckel, 1866] see Clade Ornithurae Haeckel 1866 [Gauthier 1986] {Chiappe 1991}
                                                                                                                                                          Ref: Z. Zhou & F. Zhang, 2006: 79; Count: -
                                                                                                                                                           2.2.2.2.2.2 [Order Passeres Linnaeus, 1758] see Suborder Passeres (C. Linnaeus, 1758) C. Linnaeus, 1766
                                                                                                                                                          Ref: C. a Linné, 1766: 279; Count: -
                                                                                                                                                           2.2.2.2.2.2 [Order Picae Linnaeus, 1758] see Parvclass Picae (C. Linnaeus, 1758)
                                                                                                                                                          Ref: C. a Linné, 1766: 139; Count: -
                                                                                                                                                           2.2.2.2.2.2.0 [Subclass †Odontoholcae (Marsh, 1875) Stejneger, 1885] see Cohort Ornithurae Haeckel, 1866
                                                                                                                                                          Ref: P. Brodkorb, 1963: 191; Count: -

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Last updated: 21 Sep 2025