Gastropoda - Caenogastropoda - Orthonematidae
Alternative spelling: Orthonematinae
Full reference: A. Nützel and K. Bandel. 2000. Goniasmidae and Orthonemidae: two new families of the Palaeozoic Caenogastropoda (Mollusca, Gastropoda). Neues Jahrbuch für Geologie und Paläontologie Monatshefte 2000(9):557-569
Parent taxon: Orthonematoidea according to A. Nützel and C. Ketwetsuriya 2016
Sister taxon: Goniasmatidae
Subtaxa: none
Type: Orthonema
Ecology: epifaunal
Distribution:
• Triassic of China (1 collection), Italy (2), Slovenia (1)
• Permian of Argentina (1), Cambodia (1), China (8), Germany (1), Greece (5), Iran (1), Japan (1), Kyrgyzstan (1), Malaysia (1), Mexico (1), Pakistan (2), Peru (1), the Russian Federation (31), Thailand (1), United States (40: Arizona, Nevada, New Mexico, Texas, Utah, Wyoming), Venezuela (11)
• Carboniferous to Permian of China (1)
• Carboniferous of China (1), Ireland (1), Japan (1), Morocco (1), the Russian Federation (11), the United Kingdom (9), United States (40: Alaska, Arizona, Iowa, Kansas, Kentucky, Missouri, Nebraska, Nevada, New Mexico, Ohio, Oklahoma, Texas, Wyoming)
• Devonian of United States (1: Alaska)
Total: 177 collections including 278 occurrences