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Grewingkia dilata
Taxonomy
Grewingkia dilata was named by Elias (1981). Its type specimen is GSC 60716 and is a 3D body fossil. Its type locality is Red River Formation, Selkirk Member, Garson, corals, which is in a Maysvillian/Richmondian open shallow subtidal wackestone/packstone in the Red River Formation of Canada.
Sister species lacking formal opinion data