Echiura
| Echiura | |
|---|---|
 | |
| Sailkapen zientifikoa | |
| Erreinua | Animalia |
| Azpierreinua | Bilateria |
| Filuma | Annelida |
| Subklasea | Echiura Newby, 1940
|
| Azpibanaketa | |
Echiura (grezieratik, echinos, arantza eta ourá, isatsa) har protostomo zelomatu klase bat dira, Annelida filumaren barnekoak, nahiz eta urte askotan zehar filum berezitutzat hartu izan den[1]. 3 eta 25 zentimetro arteko tamaina dute. Itsasoan bizi dira, hareatik gertu, lokatzean edo arroka-tartetan. 150 espezie ezagutzen dira eta Echiura fosilik zaharrena Karboniferokoa da, Penssylvaniarrekoa.
Erreferentziak
- ↑ (Ingelesez) Struck, T. H.. (2007ko apirilaren 5a). «Annelid phylogeny and the status of Sipuncula and Echiura» BMC Evolutionary Biology 2007 (7:57) (kontsulta data: 2010-05-19).
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