Invalid subtaxa: Microcoelodus Branson and Mehl 1933, Pteroconus Branson and Mehl 1933 [replaced name], Ptiloconus Sweet 1955
Parent taxon: Prioniodinina according to P. C. J. Donoghue et al. 2008
See also Andrews 1967, Barnes et al. 1979, Sepkoski 2002, Sweet 1955 and Sweet 1988
Sister taxa: Apatognathus, Aphelognathus, Chirognathus, Erika, Erraticodon, Hibbardella, Kladognathus, Oulodus
Subtaxa: Erismodus asymmetricus Erismodus gracilis Erismodus quadridactylus Erismodus symmetricus Erismodus typus Ptiloconus tortus
Ecology: nektonic carnivore
Distribution:
• Whiterockian of Canada (2: British Columbia, Northwest Territories collections)
• Arenig of Argentina (1), China (1)
• Ordovician of Argentina (2), Australia (2), Canada (2: British Columbia), China (5), Mongolia (2), the Russian Federation (19), United States (8: Colorado, Iowa, Minnesota, Oklahoma, Wyoming)
Total: 44 collections including 83 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.