Gastropoda - Murchisoniina - Hormotomidae
Alternative combination: Holopea cassina
Synonym: Plethospira subangulata Flower 1968
Full reference: R. P. Whitfield. 1886. Notice of geological investigations along the eastern shore of Lake Champlain, conducted by Prof. H.J. Seely and Pres. Ezra Brainerd, of Middlebury College, with descriptions of the new fossils discovered. Bulletin of the American Museum of Natural History 1(8):24-35
Belongs to Plethospira according to P. J. Wagner 2023
See also Flower 1968, Fortey and Peel 1990, Ulrich and Scofield 1897 and Whitfield 1886
Sister taxa: Plethospira arenaria, Plethospira caledoniensis, Plethospira cannonensis, Plethospira difficilis, Plethospira emanuelensis, Plethospira extensa, Plethospira floweri, Plethospira rotunda, Seelya cassandra, Seelya ventricosa
Ecology: epifaunal carnivore
Distribution:
• Ordovician of Canada (1: Newfoundland and Labrador collection), United States (6: Minnesota, Missouri, New York, Vermont)
Total: 7 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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