Proisocrinus

Proisocrinus ruberrimus is a species of crinoids that is in the monotypic genus Proisocrinus, which in turn is part of the monotypic subfamily Proisocrininae.^[1] This species is facultatively mobile, being able to crawl on the seabed using its oral arms.^[2]

Proisocrinus
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Crinoidea
Order:	Isocrinida
Family:	Balanocrinidae
Subfamily:	Proisocrininae Rasmussen, 1978
Genus:	Proisocrinus Rasmussen, 1978[1]
Species:	P. ruberrimus
Binomial name
Proisocrinus ruberrimus