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Monotypic taxon:
Class
Petromyzontida
- lampreys
(vertebrate)
Taxa
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Hierarchy
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Entity:
Petromyzontomorphi (Superclass)
..Petromyzonti (Class)
..[Petromyzontida] (Class) - lampreys
Concise hierarchy
(Kingdom)
Animalia
-
(Phylum)
Chordata
Current position
Petromyzontomorphi
(Superclass)
Ref:
J.S. Nelson et al., 2016
: 23.
Historical positions
Vertebrata
(Infraphylum)
Lamarck, 1801
Ref:
R. van der Laan, 2018
: 15.
Petromyzontomorphi
(Superclass)
Ref:
J.S. Nelson et al., 2016
: 23.
Petromyzontomorphi
(Superclass)
Ref:
J.S. Nelson, 2006
: 24.
Number of Subtaxa
1989-present
Systema Naturae 2000
: 7 Mar 2024
[1o;3f;10g;43s; †4f;6g]
2018
R. van der Laan
: 15
[1o;3f; †1f]
2016
J.S. Nelson et al.
: 26
[1o;3f; †1f]
©2004-2025 Universal Taxonomic Services
Last updated:
21 Sep 2025