Chroniosuchidae

Chroniosuchidae
Temporal range: Upper Permian–Upper Triassic
Chroniosuchus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Order: Chroniosuchia
Family: Chroniosuchidae
Vjuschkov, 1957
Genera

The Chroniosuchidae are a family of semi-aquatic reptiliomorph amphibians found in sediments from the upper Permian and the upper Triassic periods, most in Russia. They were generally rather large animals, with long jaws similar to those found in modern crocodiles, and probably lived a similar life style as riverside piscivores and ambush predators. Like all Chroniosuchians, they bore extensive osteoderm armour on their backs, possibly as protection against terrestrial predators such as the Permian therapsids and the Triassic Rauisuchians.

Phylogeny

Below is the cladogram from Buchwitz et al. (2012) showing the phylogenetic relations of chroniosuchids:[6]

Chroniosuchia 

 Madygenerpeton 




 Chroniosaurus dongusensis 




 Chroniosaurus levis 




 Suchonica 



 Jarilinus 



 Chroniosuchus 




 Uralerpeton 


Bystrowianidae


 Synesuchus



 Bystrowiella





 Bystrowiana




 Axitectum



 Dromotectum










Chroniosuchidae

See also

References

  1. 1 2 Jin-Ling Li and Zheng-Wu Cheng (1999). "New Anthracosaur and Temnospondyl Amphibians from Gansu, China - The Fifth Report on Late Permian Dashankou Lower Tetrapod Fauna" (PDF). Vertebrata PalAsiatica 37 (3): 234–247.
  2. V. K. Golubev (1998). "Revision of the Late Permian Chroniosuchians (Amphibia, Anthracosauromorpha) from Eastern Europe" (PDF). Paleontological Journal 32 (4): 390–401.
  3. Rainer R. Schoch, Sebastian Voigt, Michael Buchwitz (2010). "A chroniosuchid from the Triassic of Kyrgyzstan and analysis of chroniosuchian relationships". Zoological Journal of the Linnean Society 160 (3): 515–530. doi:10.1111/j.1096-3642.2009.00613.x.
  4. V. K. Golubev (1998). "Narrow-armored Chroniosuchians (Amphibia, Anthracosauromorpha) from the Late Permian of Eastern Europe" (PDF). Paleontological Journal 32 (3): 278–287.
  5. V. K. Golubev (1999). "A New Narrow-Armored Chroniosuchian (Amphibia, Anthracosauromorpha) from the Upper Permian of Eastern Europe" (PDF). Paleontological Journal 33 (2): 166–173.
  6. Buchwitz, M.; Foth, C.; Kogan, I.; Voigt, S. (2012). "On the use of osteoderm features in a phylogenetic approach on the internal relationships of the Chroniosuchia (Tetrapoda: Reptiliomorpha)". Palaeontology 55 (3): 623–640. doi:10.1111/j.1475-4983.2012.01137.x.
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