Asteroidea - Euaxosida - Palasterinidae

Alternative combination: Palasterina rigidus

Full reference: E. Billings. 1857. Description of new fossils from the Silurian rocks of Canada. Report of Progress for years 1853-1856, Geological Survey of Canada 256-345

Belongs to Petraster according to D. B. Blake et al. 2016

See also Billings 1857, Billings 1858, Blake 2018, Hall 1868, Owen 1965 and Schuchert 1915

Sister taxa: Petraster americanus, Petraster angustior, Petraster crozonensis, Petraster kinahani, Petraster richi, Petraster smythi, Uranaster ramseyensis

Type specimen: Victoria Memorial Museum, Ottawae No140la.

Distribution: there are no occurrences of Petraster rigidus in the database

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Specimen images are retrieved through the ePANDDA API.