Family Dicamptodontidae Tihen 1958 (giant salamander)
Parent taxon: Ambystomatoidea according to K.-Q. Gao and N. H. Shubin 2001
See also Carroll 1988, Estes 1981, Frank and Ramus 1996 and Naylor and Krause 1981
Sister taxa: Ambystomatidae, Scapherpetontidae
Subtaxa: Dicamptodon Dicamptodontinae Rhyacotritoninae
Ecology: amphibious carnivore
Distribution:
• Quaternary of United States (1: California collection)
• Eocene of United States (1: North Dakota)
• Paleocene of Canada (2: Alberta)
Total: 4 collections each including a single occurrence