Concise hierarchy
(Kingdom) Animalia - (Phylum) Chordata - (Class) Agnatha
Current position
Alternative positions
Historical positions
| †Pteraspidomorphi (Subclass) Goodrich, 1909 |
Ref:
M.J. Benton, 2015: 434, box 3.1 (p. 48).
|
| †Pteraspidomorphi (Subclass) Goodrich, 1909 |
Ref:
M.J. Benton, 2005: 390, box 3.1.
|
| †Pteraspidomorphi (Subclass) Goodrich, 1909 |
Ref:
R.L. Carroll, 1988: 595.
|
| Ostracoderms ([unranked]) |
Ref:
A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 620).
|
| †Pteraspidomorphi (Subclass) Goodrich, 1909 |
Ref:
B. Grzimek et al., 1974: 45.
[inferred rank] |
| †Ostracophori (Class) |
Ref:
D.S. Jordan, 1923: 85.
|
Number of Subtaxa