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Irregularia
Group of sea urchins / From Wikipedia, the free encyclopedia
Irregularia is an extant infraclass of sea urchins that first appeared in the Lower Jurassic.
Quick Facts Scientific classification, Superorders ...
Irregularia | |
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Echinocardium cordatum | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Class: | Echinoidea |
Subclass: | Euechinoidea |
Infraclass: | Irregularia Latreille, 1825 |
Superorders | |
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