Holectypoida
Order of sea urchins / From Wikipedia, the free encyclopedia
The Holectypoida are an order of sea urchins related to the sand dollars. The order consists of just two living genera, but was once more diverse.
Quick Facts Scientific classification, Families ...
Holectypoida | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Class: | Echinoidea |
Subclass: | Euechinoidea |
Infraclass: | Irregularia |
Order: | Holectypoida Duncan, 1889 |
Families[1] | |
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