SINCE 1828
Actinocrinus
noun
Ac·ti·no·cri·nus
| \
ˌak-tə-(ˌ)nō-ˈkrī-nəs \
Definition of Actinocrinus
: a genus (the type of the family Actinocrinidae) of crinoids abundant in the Mississippian rocks of America and Europe
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