phylum of marine annelids From Wikipedia, the free encyclopedia
The Echiura, or spoon worms, are a small group of marine animals. They are often considered to be a group of annelids, although they lack the segmented structure found in other members of that group, and so may also be treated as a separate phylum.
Echiura Temporal range: Upper Carboniferous – Recent | |
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Urechis caupo | |
Scientific classification | |
Kingdom: | |
Phylum: | |
Class: | Echiura Newby, 1940 |
Orders | |
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However, phylogenetic analyses of DNA sequences place echiurans and Sipuncula within the Annelida.[1]
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