Concise hierarchy
(Kingdom) Animalia - (Phylum) Echinodermata - (Class) Echinoidea
Current position
Alternative positions
Historical positions
| Echinoidea (Class) (Leske, 1778) |
Ref:
J.J. Sepkoski Jr., 2002: 287.
|
| Echinoidea (Class) (Leske, 1778) |
Ref:
H.G. Hansson, 2001: 346.
|
| Echinoidea (Class) (Leske, 1778) |
Ref:
R.S. Boardman et al., 1987
|
| Perischoechinoidea (Subclass) (M'Coy, 1849) |
Ref:
F.J. Fell, 1982: 805.
|
| Perischoechinoidea (Subclass) (M'Coy, 1849) |
Ref:
B. Grzimek, 1973-1975
|
Number of Subtaxa