Euechinoidea
Scientific classification
Kingdom: Animalia Phylum: Echinodermata Class: Echinoidea Subclass: Euechinoidea Bronn, 1860
Families
Aspidodiadematidae Diadematidae Micropygidae Pedinidae Pseudodiadematidae

The subclass Euechinoidea includes almost all living species of sea urchin, and fossil forms going back as far as the Triassic.

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