Alternative spelling: Urasterella (Stenaster)
Synonym: Tetraster Nicholson and Etheridge 1880
Full reference: E. Billings. 1858. On the Asteridae of the Lower Silurian rocks of Canada. Figures and descriptions of Canadian organic remains. Geological Survey of Canada 3:75-85
Parent taxon: Stenasteridae according to D. B. Blake et al. 2016
See also Blake 2013, Dean Shackleton 2005, Hall 1868, Nicholson and Etheridge 1880, Owen 1965, Schuchert 1914, Schuchert 1915, Sepkoski 2002, Spencer 1927, Spencer 1951 and Spencer and Wright 1966
Sister taxon: Aulactis
Subtaxa: Stenaster confluens Stenaster obtusus
Ecology: low-level epifaunal suspension feeder-deposit feeder
Distribution:
• Silurian of Australia (1 collection)
• Ordovician of Canada (1: Ontario), Norway (1), United States (2: Kentucky, Utah)
Total: 5 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.