Diadematacea

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Diadematacia
Temporal range: Late Triassic–Recent
File:Echinothrix diadema.JPG
Echinothrix diadema
Scientific classification
Kingdom:
Phylum:
Class:
Subclass:
Superorder:
Diadematacia
Orders

Diadematoida
Echinothurioida
Pedinoida

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Diadematacia 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

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