Cyrtostropha Donald 1902 (snail)

Gastropoda - Murchisoniina - Murchisoniidae

Alternative spelling: Murchisonia (Cyrtostropha)

Full reference: J. G. Donald. 1902. On some of the Proterozoic Gasteropoda which have been referred to Murchisonia and Pleurotomaria, with descriptions of new subgenera and species. Quarterly Journal of the Geological Society of London 58(4):313-339

Parent taxon: Murchisoniidae according to P. J. Wagner 2017

See also Donald 1902, Knight et al. 1960 and Sepkoski 2002

Sister taxa: Aclisina, Altadema, Anarconcha, Barroisocaulus, Bellazona, Biangularia, Brilonella, Cibecuia, Devonocerithioides, Domiporta, Eohormotomina, Farewellia, Glyphodeta, Helicospira, Kaseiella, Leptorima, Lodanaria, Loxisonia, Mesocoelia, Michelia, Micheliopsis, Micrentoma, Morania, Murchisonia, Parahormotomina, Protospira, Pseudoaclisina, Trypanocochlea, Vebericochlis, Vistilia, Vladanella, Wuxuanella

Subtaxa: Cyrtostropha bicincta Cyrtostropha cava Cyrtostropha coralli Cyrtostropha macrospira Cyrtostropha monoliniformis Cyrtostropha morinensis Cyrtostropha obscura Cyrtostropha pacifica Cyrtostropha salteri Cyrtostropha scitula Cyrtostropha sculpta Cyrtostropha subplicata Cyrtostropha torquata

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Type: Pleurotoma coralli

Ecology: facultatively mobile epifaunal suspension feeder


• Silurian of Canada (4: Ontario collections), China (1), the Czech Republic (3), Sweden (4), the United Kingdom (3), United States (2: New York)

• Ordovician of Canada (22: Northwest Territories, Ontario, Quebec), Greenland (1), Ireland (1), United States (23: Illinois, Iowa, Kentucky, Michigan, Minnesota, Missouri, Tennessee)

Total: 64 collections including 67 occurrences

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