Named By: J. Leidy - 1853.
Classification: Chordata, Synapsida, Sphenacodontidae, Sphenacodontinae.
Species: B. borealis (type).
Known locations: Canada, Prince Edawrd Island - Orby Head Formation.
Time period: Artinskian of the Permian.
Fossil representation: Partial skull remains incorporating parts of the pre-maxilla, maxilla and snout.
Bathygnathus is a little known genus of pelycosaur that lived in Canada during the Early Permian. Though only known from partial remains, studies of these fossils have led to the suggestion that Bathygnathus would have been similar to pelycosaurs like Dimetrodon.
- [Fragment of a jaw of an extinct saurian animal]. - Proceedings of the Academy of Natural Sciences of Philadelphia 6:404. - J. Leidy - 1853.
- Bathygnathus borealis, Leidy, and the Permian of Prince Edwards Island. - Science Vol. 22, No 550 pp52-53. - E. C. Case - 1905.