Urasterella

Urasterella Temporal range: 460.5–388.1  Ma PreꞒ Ꞓ O S D C P T J K Pg N Ordovician to Devonian [1]
Urasterella asperula
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
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 stars 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. Paleobiology Database The Paleobiology Database Urasterella entry

External links

• Urasterella (syn. Roemeraster) Archived 2009-03-18 at the Wayback Machine in the Field Museum's Evolving Planet