Concise hierarchy
(Kingdom) Animalia - (Phylum) Cnidaria - (Class) Hydrozoa
Current position
Alternative positions
Historical positions
| Hydrozoa (Class) Owen, 1843 |
Ref:
J.J. Sepkoski Jr., 2002: 49.
|
| Hydrozoa (Class) Owen, 1843 |
Ref:
1998
|
| Hydrozoa (Class) Owen, 1843 |
Ref:
R.C. Brusca & G.J. Brusca, 1990
|
| Hydrozoa (Class) Owen, 1843 |
Ref:
R.S. Boardman et al., 1987
|
| Hydrozoa (Class) Owen, 1843 |
Ref:
D.F. Dunn, 1982: 682.
|
| Hydrozoa (Class) Owen, 1843 |
Ref:
T.I. Storer et al., 1979
|
Number of Subtaxa