Alphacrinus

Alphacrinus is an extinct genus of crinoids which existed during the early Ibexian period. It was named by Thomas E. Guensburg in 2010, and placed into its own family, Alphacrinidae. The type species is Alphacrinus mansfieldi.^[1]

Alphacrinus Temporal range: Ibexian
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Crinoidea
Parvclass:	†Disparida
Family:	†Alphacrinidae Guensburg, 2010
Genus:	†Alphacrinus Guensburg, 2010
Species:	†A. mansfieldi
Binomial name
†Alphacrinus mansfieldi Guensburg, 2010