| Palæos: |  |
Echinodermata |
| INVERTEBRATES | Cladogram |
| Page Back | Unit Home | Page Next | Page Up | Page Down | Echinodermata | Cladogram | Glossary | Mikko's Phylogeny Home |
| Palæos: | |
Echinodermata |
| INVERTEBRATES | Cladogram |
| Page Back | Unit Home | Page Next | Page Up | Page Down | Echinodermata | Cladogram | Glossary | Mikko's Phylogeny Home |
<==o ECHINODERMATA
|--+-- †CYSTOIDEA
| `-- †BLASTOIDEA
`--+-- CRINOZOA (merilijat)
`--o ELEUTHEROZOA
|--o †EDRIOASTEROIDEA
`--+?- HOLOTHUROIDEA
`--+--o ASTEROZOA (meritähdet)
| |--o STELLEROIDEA
| | `--o SOMASTEROIDEA
| | `--o GONIACTINIDA
| | `-- Platasteriidae
| |-- ASTEROIDEA
| `-- OPHIUROIDEA
|?- [†]CONCENTROCYCLOIDEA
`?-+-- †OPHIOCISTIOIDEA
`--o ECHINOZOA
`-- ECHINOIDEA
Conway Morris, S., 1993: The fossil record and early evolution of the Metazoa. --Nature, vol. 361, 21 January, pp. 219-225
The Tree of Life site has an excellent cladogram and discussion of the relationships of Echinodermata, both living and extinct. It differs in a number of respects from our arrangement. The Berkeley UCMP page has yet another arrangement -- a bit more like our own but probably somewhat out of date. Mikko Haaramo's cladogram -- from which ours is derived -- may be found at Echinodermata. For those determined Linneans out there, the California Academy of Sciences maintains a Linnean scheme at Classification of the Extant Echinodermata. Finally, Tom Holtz has a good discussion of the issues in his course notes at GEOL 331 Lectures 32-33- Echinodermata. ATW050801.
