Procynosuchidae: Difference between revisions

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Adding local short description: "Family of basal cynodonts", overriding Wikidata description "family of mammals (fossil)" (Shortdesc helper)
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Revision as of 22:47, 30 September 2020

Procynosuchidae
Temporal range: Late PermianEarly Triassic 260–247 Ma
Procynosuchus delaharpeae from the Late Permian of South Africa
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Clade: Cynodontia
Family: Procynosuchidae
Broom, 1938
Genera

Procynosuchus
Sludica
Uralocynodon

Procynosuchidae is an extinct family of therapsids which, along with Dviniidae, were the earliest cynodonts. They appeared around 260 million years ago, and were most abundant during the latest Permian time (251 mya), shortly before the Permian-Triassic extinction event. Despite being the basal member of the cynodont clade, they already showed some of the advanced mammalian characteristics, but Procynosuchids bore resemblance to the Therocephalians.

Procynosuchid eyes are forward-facing, and the dentary was larger than the Therocephalians. The Procynosuchids had a secondary palate, which allows them to eat food while breathing, just like mammals. The Procynosuchids became extinct at the Permian-Triassic extinction event. Some procynosuchids were terrestrial, but others like Procynosuchus were semi-aquatic.