Articulata are a subclass or superorder within the class Crinoidea, including all living crinoid species. They are commonly known as sea lilies or feather stars. The Articulata are differentiated from the extinct subclasses by their lack of an anal plate in the adult stage and the presence of an entoneural system. Articulata first appeared in the fossil record during the Triassic period although other, now extinct crinoid groups, originated in the Ordovician.
Comasteridae is a family of crinoids.
Henricia is a large genus of slender-armed sea stars belonging to the family Echinasteridae. It contains about fifty species.
Bathycrinidae is a family of echinoderms in the class Crinoidea. It contains the following genera and species:
Luidia is a genus of starfish in the family Luidiidae in which it is the only genus. Species of the family have a cosmopolitan distribution.
Sanford Myron Zeller was an American mycologist.
Antedonidae is a family of crinoids or feather stars in the phylum Echinodermata. Members of the family are unstalked and have ten feathery arms. They can move about freely and have clawed cirri to attach them temporarily to structures.
Antedon is a genus of sessile, stemless crinoids. The genus first appeared in the fossil record in the Cretaceous period.
Charitometridae is a family of crinoids or feather stars in the phylum Echinodermata.
The Echinometridae are a family of sea urchins in the class Echinoidea.
Himerometra is a genus of crinoids belonging to the family Himerometridae.
The elegant feather star is a species of crinoid in the family Tropiometridae.
Isselicrinidae is one of four extant families of crinoids in the order Isocrinida.
Comatulidae is a family of comatulid crinoids. Since 2015, it replaces the family Comasteridae.
Bathycrinus is a genus of crinoids.
Colobometridae is a family of crinoids belonging to the order Comatulida. Members of this order are known as feather stars.
Dichrometra is a genus of echinoderms belonging to the family Mariametridae.
Comanthus is a genus of crinoid echinoderms belonging to the family Comatulidae.
Encope is a genus of echinoderms belonging to the family Mellitidae.
Zygometra is a genus of crinoids within the family Zygometridae. Members of this genus are found at depths of 10 to 162.5 meters in the Indo-Pacific around countries such as Australia, Indonesia, Malaysia and the Philippines.
