Infraclass
Carinacea
Strongylocentrotus purpuratus. Photo: (c) Robby Deans, some rights reserved (CC BY-NC)
The infraclassis Carinacea includes most living species of regular sea urchin, and fossil forms going back as far as the Triassic.
Strongylocentrotus purpuratus. Photo: (c) Robby Deans, some rights reserved (CC BY-NC)
The infraclassis Carinacea includes most living species of regular sea urchin, and fossil forms going back as far as the Triassic.
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