Biology:Echinocystitoida
From HandWiki
Short description: Extinct order of sea urchins
| Echinocystitoida | |
|---|---|
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Subclass: | Perischoechinoidea |
| Order: | †Echinocystitoida |
Echinocystitoida were an order of extinct sea urchin in the subclass Perischoechinoidea.
References
Wikidata ☰ Q5332473 entry
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