Rhynchonellata - Terebratulida - Cryptonellidae
Parent taxon: Cryptonellidae according to A. Williams et al. 2006
Sister taxa: none
Subtaxa: Booralia Cryptonella Dielasmella Gacina Heterelasma Petriathyris Texarina
Type: Cryptonella
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Eocene of United States (1: Virginia collection)
• Cretaceous of Brazil (1)
• Triassic of the Russian Federation (1)
• Permian of Australia (2), China (1), Croatia (1), Mexico (8), Nepal (1), Pakistan (1), United States (129: Nevada, New Mexico, Texas), Venezuela (1)
• Namurian of Australia (4)
• Carboniferous of Australia (11), Ireland (1), United States (11: Illinois, Indiana, Missouri, Montana, Texas)
• Devonian of Argentina (1), Bolivia (7), Brazil (5), Canada (8: Alberta, Northwest Territories, Ontario, Quebec), Colombia (12), the Czech Republic (1), Germany (3), Luxembourg (1), New Zealand (1), the Russian Federation (7), South Africa (3), Spain (1), United States (35: Indiana, Michigan, Montana, New York)
Total: 259 collections including 333 occurrences