(dog tooth crocodile).
Named By: A. S. Woodward - 1896.
Classification: Chordata, Reptilia, Crocodylomorpha, Notosuchia, Sebecosuchia.
Species: C. rothi (type).
Size: Uncertain due to lack of remains.
Known locations: Argentina - Bajo de la Carpa Formation.
Time period: Santonian of the Cretaceous.
Fossil representation: Partial skull (mostly of snout, maxilla and premaxilla) as well as partial dentary (lower jaw).
When named in 1896, Cynodontosuchus was not only the earliest known sebecosuchian crocodile, it was also the first confirmed as living before the Cenozoic period. Since this time there are now several Cretaceous sebecosuchian crocodiles known to us, and one of these genera, Baurusuchus, has been proposed by some to be a junior synonym to Cynodontosuchus. Critics of this theory however point out that Cynodontosuchus has a much deeper rostrum that Baurusuchus, as well as only five pairs of teeth in the maxilla, significantly less than Baurusuchus.
- On two Mesozoic crocodilians from the red sandstones of the territory of Neuquen (Argentina Republic). Notosuchus (genus novum) and Cynodontosuchus (genus novum). - Anales del Museo de La Plata. Paleontología Argentina 4:1-20. - A. S. Woodward - 1896.
- Radiation évolutive, paléoécologie et al. biogéographie des crocodiliens mésosuchiens. - Mémoire de la Société géologique de France 142: 1–88. - E. Buffetaut - 1982.
- Biogeographic evolution of the South American crocodilians. - München Geowiss. Abh., A(30):159-184. - Z. B. Gasparini - 1996.