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Monotypic taxon:
Order †
Tolypelepidiformes
(fish)
Taxa
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Hierarchy
Nomenclature
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Entity:
†Heterostraci (Subclass)
..†Ariaspididae (Family)
..[†Cardipeltida] (Order)
..†Cardipeltiformes (Order)
..[†Corvaspidida] (Order)
..†Corvaspidiformes (Order)
..†Ctenaspididae (Family)
..†Cyathaspidiformes (Order)
..[†Lepidaspidida] (Order)
..†Pteraspidiformes (Order)
..†tesselate Heterostraci
..[†Tesseraspidida] (Order)
..[†Tolypelepidida] (Order)
..†Traquairaspidiformes (Order)
..[†Tolypelepidiformes] (Order)
....[†Tolypelepididae] (Family)
Concise hierarchy
(Kingdom)
Animalia
-
(Phylum)
Chordata
-
(Class)
Pteraspidomorpha
Current position
†
Heterostraci
(Subclass)
Lankester, 1868
Ref:
R. van der Laan, 2018
: 17.
Historical positions
†
Heterostraci
(Subclass)
Lankester, 1868
Ref:
R. van der Laan, 2018
: 17.
Number of Subtaxa
1989-present
Systema Naturae 2000
: 8 Mar 2024
[; †1f]
2018
R. van der Laan
: 17
[; †1f]
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Last updated:
21 Sep 2025