Chondrichthyes - Symmoriiformes - Symmoriidae
Parent taxon: Symmoriidae according to M. Goto et al. 1988
See also Gunnell 1933, Hay 1902, Jordan 1963 and Sepkoski 2002
Sister taxa: Cobelodus, Danaea, Gutturensis, Orestiacanthus, Stethacanthulus, Stethacanthus, Symmorium, Bethacanthus, Akmonistion, Physonemus chesterensis, Physonemus parvulus
Subtaxa: Petrodus acutus Petrodus patelliformis Petrodus pustulosus
Type: Petrodus patelliformis
Ecology: nektonic carnivore
Distribution:
• Permian of Japan (1 collection), the Russian Federation (1)
• Carboniferous to Permian of Argentina (1)
• Carboniferous of the United Kingdom (1), United States (7: Arizona, Colorado, Iowa, Kansas, Missouri, New Mexico, South Dakota)
Total: 11 collections including 12 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.