Echinozoa

Echinozoa
Temporal range:
A sea cucumber (Apostichopus californicus) among sea urchins (Strongylocentrotus purpuratus and Mesocentrotus franciscanus) in California, United States
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Echinodermata
Subphylum:
Classes

† = Extinct

Echinozoa is a subphylum of free-living echinoderms in which the body is or originally was a modified globe with meridional symmetry. Echinozoans lack arms, brachioles or other appendages, and do not at any time exhibit pinnate structure.[1] Their two extant classes are the sea urchins and the sea cucumbers.

See also

References

  1. ^ "Answers - the Most Trusted Place for Answering Life's Questions". Answers.com.


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