Aacocrinus

''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family.
There are currently 14 species within this genus:

* '' Aacocrinus acylus'' (Webster & Jell 1999)
* '' Aacocrinus algeriaensis'' (Webster, Maples, Sevastopulo, Frest & Waters 2004)
* '' Aacocrinus boonensis''
* '' Aacocrinus chouteauensis''
* '' Aacocrinus enigmaticus'' (Webster & Lane 1987)
* '' Aacocrinus milleri''
* '' Aacocrinus nododorsatus'' (Bowsher 1955)
* '' Aacocrinus protuberoarmatus'' (Missouri)
* '' Aacocrinus sampsoni''
* '' Aacocrinus senectus''
* '' Aacocrinus spinosulus''
* '' Aacocrinus spinulosus''
* '' Aacocrinus tetradactylus'' (Missouri)
* '' Aacocrinus triarmatus''

References

Monobathrida
Paleozoic echinoderms
Prehistoric echinoderms of North America

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