Strophomenata - Strophomenida - Rafinesquinidae
Alternative spelling: Leptaena (Leptagonia)
Synonyms: Adiaphragma, Semileptagonia
Parent taxon: Leptaeninae according to A. Williams et al. 2000
See also Cocks 2010 and Sepkoski 2002
Sister taxa: Astamena, Bracteoleptaena, Estonomena, Glossoleptaena, Harjumena, Hingganoleptaena, Hollardina, Lepidoleptaena, Leptaena, Leptaenopyxis, Limbimurina, Lioleptaena, Lissoleptaena, Mackerrovia, Notoleptaena, Oandumena, Rugoleptaena, Schmidtomena, Tchadania, Rhactomena
Subtaxa: Leptagonia analoga Leptagonia goldfussiana Leptagonia relicta
Distribution:
• Carboniferous of Australia (49 collections), Canada (6: Alberta), China (1), Germany (2), Iran (2), Ireland (1), the United Kingdom (33), United States (22: Arkansas, California, Idaho, Illinois, Iowa, Missouri, Montana, Oklahoma, Texas)
• Givetian of France (4)
• Devonian to Carboniferous of the United Kingdom (1)
• Devonian of Australia (1), Canada (10: Northwest Territories, Yukon, Yukon Territory), China (2), the Czech Republic (8), Germany (15), Morocco (1), Poland (5), the Russian Federation (4), Spain (8), Tajikistan (1)
Total: 176 collections including 179 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.