The Taxonomicon
Entity by Scientific Name
Entity by Epithet
Entity by Identifier
Entity by Common Name
Taxon by Scientific Name (above family group)
Taxon by Scientific Name (family group)
Taxon by Scientific Name (genus group)
Taxon by Scientific Name (species group)
Taxon by Scientific Name (below species group)
Taxon by Authorship
Object by Name
Object by Number
Phenomenon by Name
Homonym
Topic
Person by Last Name
Organization by Name
Reference by Year
Reference by Title
Home
Site map
|
Contact
Monotypic taxon:
Class †
Chasmataspidida
Caster & Brooks, 1956
(arthropod)
Taxa
Advanced Search
Entity
Show Invalid Names
Show Alternatives
Bookmarks
Set Bookmark
Go to Bookmark
Hierarchy
Nomenclature
Taxonomy
Properties
Relationships
Bibliography
Links
Entity:
Dekatriata
..Sclerophorata
..†Chasmataspidida (Class)
....†Chasmataspidida (Order)
Concise hierarchy
(Kingdom)
Animalia
-
(Phylum)
Arthropoda
Subsequent positions
Dekatriata
([unranked])
Lamsdell, 2013
Ref:
J.C. Lamsdell, 2013
: 20.
Current position
Dekatriata
([unranked])
Lamsdell, 2013
Ref:
J.C. Lamsdell, 2013
: 20.
[
new position
]
Alternative positions
Chelicerata
(Subphylum)
Heymons, 1901
Ref:
Z.-Q. Zhang, 2013
: 18.
Euchelicerata
(Epiclass)
Weygoldt & Paulus, 1979
Ref:
Z.-Q. Zhang, 2011
: 99; 17 May 2016.
[indirect]
Historical positions
Chelicerata
(Subphylum)
Heymons, 1901
Ref:
Z.-Q. Zhang, 2013
: 18.
Dekatriata
([unranked])
Lamsdell, 2013
Ref:
J.C. Lamsdell, 2013
: 20, fig. 8.
[
new position
]
Chelicerata
(Subphylum)
Heymons, 1901
Ref:
Z.-Q. Zhang, 2011
: 99.
Number of Subtaxa
2025
Available in Systema Naturae 2000
†1o;2f;12g
1989-present
Systema Naturae 2000
: 30 Jul 2024
[; †1o;2f;12g]
2013
Z.-Q. Zhang
: 18
†8s
2011
Z.-Q. Zhang
: 99
†8s
©2004-2025 Universal Taxonomic Services
Last updated:
21 Sep 2025