Cyonosaurus

Cyonosaurus
Temporal range: Late Permian (Wuchiapingian to Changhsingian), 256.6–252 Ma
Skull of C. longiceps in the Field Museum of Natural History.
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Clade: †Gorgonopsia
Genus: †Cyonosaurus
Olson, 1937
Species
  • †C. longiceps Olsen, 1937 (type)
  • †C. rubidgei (Broom, 1937 [originally Cyniscops rubidgei])
  • †C. kitchingi (Broom, 1936 [originally Galerhynchus kitchingi])
  • †C. broomianus (von Huene, 1950 [originally Cyniscops broomianus])
  • †C. tenuirostris (Boonstra, 1953 [originally Tangagorgon tenuirostris])
Synonyms
  • Cyniscops Broom, 1937
  • Cyniscopoides Brink and Kitching, 1953
  • Tangagorgon Boonstra, 1953
Life restoration of C. longiceps

Cyonosaurus is a genus of gorgonopsian therapsids from the Late Permian of South Africa and Zambia. The type species Cyonosaurus longiceps was named in 1937. Cyonosaurus had a skull length between 9 to 18 centimetres (3+1⁄2 to 7 in). However, an unnamed species of Cyonosaurus was noted to have a skull length of 20 cm (7.9 in). Originally, some have been reported from Early Triassic strata, but further investigation revealed that these reports were erroneous. Suggesting that Cyonosaurus went extinct during the Permian-Triassic mass extinction.

See also

References

  1. 1 2 Benoit, Julien; Kammerer, Christian F.; Dollman, Kathleen; Groenewald, David P.; Smith, Roger M.H. (15 March 2024). "Did gorgonopsians survive the end-Permian "Great Dying"? A re-appraisal of three gorgonopsian specimens (Therapsida, Theriodontia) reported from the Triassic Lystrosaurus declivis Assemblage Zone, Karoo Basin, South Africa". Palaeogeography, Palaeoclimatology, Palaeoecology. 638 112044. doi:10.1016/j.palaeo.2024.112044. Retrieved 21 May 2024 – via Elsevier Science Direct.
  2. 1 2 Acker, Alex; Peecook, Brandon R.; Sidor, Christian A.; Whitney, Megan R. (2025). "The first occurrence of Cyonosaurus (Therapsida, Gorgonopsia) from the Luangwa Basin of Zambia". Journal of Vertebrate Paleontology. 45. doi:10.1080/02724634.2024.2444407.
  3. 1 2 Gebauer, E.V.I. (2007). Phylogeny and evolution of the Gorgonopsia with a special reference to the skull and skeleton of GPIT/RE/7113 ('Aelurognathus?' parringtoni) (PDF) (Ph.D. thesis). Tübingen: Eberhard-Karls Universität Tübingen. pp. 1–316. Archived from the original on December 2, 2022.