Gastropoda - Euomphalina - Platyceratidae
Alternative combinations: Cyclonema bilex, Pleurotomaria bilix
Full reference: T. A. Conrad. 1842. Observations on the Silurian and Devonian systems of the United States, with descriptions of new organic remains. Journal of the Academy of Natural Sciences of Philadelphia 8(2):228-280
Belongs to Cyclonema according to P. J. Wagner 2023
See also Conrad 1842, Foerste 1923, Hall 1847, Hall 1852, Hall 1861, Tassell 1980, Thompson 1970, Ulrich and Scofield 1897 and Wilson 1951
Sister taxa: Cyclonema (Cyclonema), Cyclonema aiens, Cyclonema ampullosum, Cyclonema ananas, Cyclonema apicatum, Cyclonema bellulum, Cyclonema bitauniensis, Cyclonema boreale, Cyclonema canaliculata, Cyclonema cancellatum, Cyclonema cives, Cyclonema compar, Cyclonema composita, Cyclonema consepultum, Cyclonema convergens, Cyclonema crebristria, Cyclonema cushingi, Cyclonema daytonensis, Cyclonema decora, Cyclonema delicatula, Cyclonema derelictum, Cyclonema dowlingii, Cyclonema fasciata, Cyclonema filicinctus, Cyclonema fluctuatum, Cyclonema formosum, Cyclonema gracile, Cyclonema guilleri, Cyclonema gyronemoides, Cyclonema hageri, Cyclonema hallianum, Cyclonema humerosum, Cyclonema inaequistriatum, Cyclonema inflatum, Cyclonema infrequens, Cyclonema inopinata, Cyclonema intermedium, Cyclonema karlsteinensis, Cyclonema laudabile, Cyclonema lepidula, Cyclonema leptonotum, Cyclonema limatum, Cyclonema lineatum, Cyclonema lydiamariarum, Cyclonema margaritoides, Cyclonema marylandense, Cyclonema mediale, Cyclonema minuta, Cyclonema modestum, Cyclonema montrealense, Cyclonema niagarensis, Cyclonema nodulosum, Cyclonema obsolescens, Cyclonema parvimedium, Cyclonema percarinata, Cyclonema percingulatum, Cyclonema praecipitum, Cyclonema rupestre, Cyclonema servus, Cyclonema simulans, Cyclonema statshiunaica, Cyclonema sublaeve, Cyclonema subundata, Cyclonema sulphuriferum, Cyclonema tenuissimum, Cyclonema textilis, Cyclonema thalia, Cyclonema timida, Cyclonema timidum, Cyclonema transversum, Cyclonema trepidans, Cyclonema varians, Cyclonema varicosum, Cyclonema varispirum, Cyclonema ventricosa
Subtaxa: Cyclonema bilix conicum Cyclonema bilix fluctuatum
Ecology: facultatively mobile epifaunal coprophage-deposit feeder
Distribution:
• Silurian of the Russian Federation (1 collection), United States (1: California)
• Ordovician of Canada (13: Ontario, Quebec), United States (7: Indiana, Iowa, Ohio, Tennessee)
Total: 22 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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