Maddin, Hillary C.; Sidor, Christian A.; Reisz, Robert R. [160:caoets2.0.co;2 Cranial anatomy ofEnnatosaurus tecton(Synapsida: Caseidae) from the Middle Permian of Russia and the evolutionary relationships of Caseidae]. Journal of Vertebrate Paleontology. 2008-03-12, 28 (1): 160–180. ISSN 0272-4634. doi:10.1671/0272-4634(2008)28[160:caoets]2.0.co;2.
doi.org
Maddin, Hillary C.; Sidor, Christian A.; Reisz, Robert R. [160:caoets2.0.co;2 Cranial anatomy ofEnnatosaurus tecton(Synapsida: Caseidae) from the Middle Permian of Russia and the evolutionary relationships of Caseidae]. Journal of Vertebrate Paleontology. 2008-03-12, 28 (1): 160–180. ISSN 0272-4634. doi:10.1671/0272-4634(2008)28[160:caoets]2.0.co;2.
worldcat.org
Maddin, Hillary C.; Sidor, Christian A.; Reisz, Robert R. [160:caoets2.0.co;2 Cranial anatomy ofEnnatosaurus tecton(Synapsida: Caseidae) from the Middle Permian of Russia and the evolutionary relationships of Caseidae]. Journal of Vertebrate Paleontology. 2008-03-12, 28 (1): 160–180. ISSN 0272-4634. doi:10.1671/0272-4634(2008)28[160:caoets]2.0.co;2.