- Diadematacea
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Diadematacia
Temporal range: Late Triassic–RecentEchinothrix diadema Scientific classification Kingdom: Animalia Phylum: Echinodermata Class: Echinoidea Subclass: Euechinoidea Superorder: Diadematacia Orders Diadematoida
Echinothurioida
PedinoidaDiadematacia is a superorder of sea urchins. Unlike most other sea urchins, they generally have hollow spines. The tubercles on their test are perforated, and most species possess gills.
References
- Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 980. ISBN 0-03-056747-5.
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