About: Therocephalia   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Therocephalians are an extinct lineage of eutheriodont therapsids that lived throughout the middle and late Permian and into the Triassic. The therocephalians (literally, "beast-heads") are named after their large skulls, which, along with their teeth, suggest that most were successful carnivores.

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  • Therocephalia
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  • Therocephalians are an extinct lineage of eutheriodont therapsids that lived throughout the middle and late Permian and into the Triassic. The therocephalians (literally, "beast-heads") are named after their large skulls, which, along with their teeth, suggest that most were successful carnivores.
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dbkwik:fossil/prop...iPageUsesTemplate
Name
  • Therocephalia
Caption
  • Bauria, a derived therocephalian from the Early Triassic of South Africa
unranked order
fossil range
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  • 245(xsd:integer)
Families
  • See "Taxonomy" section.
Class
  • Synapsida
Suborder
  • Therocephalia (Broom, 1905)
Order
abstract
  • Therocephalians are an extinct lineage of eutheriodont therapsids that lived throughout the middle and late Permian and into the Triassic. The therocephalians (literally, "beast-heads") are named after their large skulls, which, along with their teeth, suggest that most were successful carnivores. Like other non-mammalian synapsids, therocephalians are often described as "mammal-like reptiles", although they are not reptiles in the cladistic sense. In fact, Therocephalia is the group most closely related to the cynodonts, which gave rise to the mammals. This relationship takes evidence in a variety of anatomical features, possibly including whiskers and hair. There remain many unanswered questions about the phylogeny, anatomy, and physiology of therocephalians. The fossils of therocephalians are numerous in the Karoo of South Africa, but have also been found in Russia, China, and Antarctica. Early therocephalian fossils discovered in Middle Permian deposits of South Africa support a Gondwanan origin for the group, which seems to have spread quickly throughout the world. Although therocephalian lineages ended during the great Permian–Triassic extinction event, a few representatives of the subgroup called Eutherocephalia survived into the Early Triassic and continued to diversify. However, the last therocephalians became extinct by the early Middle Triassic, possibly due to climate change and competition with cynodonts and various groups of reptiles.
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