Diadematacia

The Diadematacia form a superorder of sea urchins. Unlike most other sea urchins, they generally have hollow spines. The tubercles on their tests are perforated, and most species possess gills.

Diadematacia
Temporal range: Late Triassic–Recent
Echinothrix diadema
Scientific classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Infraclass: Acroechinoidea
Superorder: Diadematacia
Orders

Diadematoida
Echinothurioida
Pedinoida

References
  • Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 980. ISBN 0-03-056747-5.


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