Urasterella

Urasterella Temporal range: 460.5–388.1 Ma PreЄ Є O S D C P T J K Pg N Ordovician to Devonian^[1]

Urasterella asperula
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Subphylum:	Eleutherozoa
Class:	Asteroidea
Order:	Platyasterida
Family:	Palasteriscidae
Subfamily:	Urasterellinae
Genus:	Urasterella McCoy (1851)
Species
see text
Synonyms
Palasteracanthion Phillipaster Protasteracanthion Roemeraster Salteraster Ulrichaster

Urasterella is an extinct genus of Sea star that lived from the Ordovician to the Devonian.^[1] Its fossils are known from Europe, North America and southern Africa.^[1]

Species

There have been a number of species assigned or transferred to the genus since its description in 1851.^[1]

U. asperrimus
U. asperula (syn. Protasteracanthion primus)
U. biradialis (syn. Salteraster biradialis)
U. constellata
U. coronella (syn. Salteraster coronella)
U. creswelli
U. grandis
U. gutterfordensis
U. huxleyi
U. imbricatus (syn. Salteraster imbricatus)
U. montana
U. pulchella
U. ruthveni
U. selwyni (syn. Salteraster selwyni)
U. thraivensis
U. ulrichi

Sources

1 2 3 4 http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=31404&is_real_user=1 The Paleobiology Database Urasterella entry

Urasterella (syn. Roemeraster) in the Field Museum's Evolving Planet

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