Therocephalia

(redirected from Therocephalian)
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Therocephalia

 

(also Scylocosauroidea), an infraorder (or superfamily) of extinct reptiles of the suborder Theriodontia (subclass Synapsida) that lived in the Late Permian. Members of the infraorder were predators of small or medium size; some possibly fed on carrion. The low, massive skull preserved archaic features. In the lower jaw, for example, the posterior bones were well developed, the teeth on the buccal side of the mouth lacked supplementary cusps on the crown, and the secondary palate was absent or rudimentary. Therocephalia comprised several families. The greatest number of those described inhabited southern Africa; some are also known from East Africa, western China, and the European part of the USSR.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
A large lizard like creature is roaming the corridors, and though most kids would enjoy the distraction of a prehistoric creature brightening up their day, the deadly therocephalian is on the hunt.
Primeval British Comedy Awards: The Nominations (7.00pm) A school detention class is thrown into chaos when a teacher is killed and the pupils run riot - unaware that a deadly therocephalian is stalking the corridors looking for its next meal.
Primeval (7.00pm) A school detention class is thrown into chaos when a teacher is killed and the pupils run riot - unaware that a deadly therocephalian is stalking the corridors looking for its next meal.
Pickoftheday Primeval (7.00pm) A school detention class is thrown into chaos when a teacher is killed and the pupils run riot - unaware that a deadly therocephalian is stalking the corridors looking for its next meal.
Tonight Primeval ITV1 Wales, 7pm A deadly therocephalian attacks a school, resulting in a full-scale mobilisation of the ARC team to meet the threat of the poisonous reptile.
However, in a recently prepared specimen of the primitive therocephalian Glanosuchus (GS M796), an additional ridge occurs ventral to the nasoturbinal ridge on the lateral wall of the nasal cavity.
Consequently, its capacity to recover respiratory water vapor was probably limited as well, which suggests that the increase in the ventilation rate of this early therocephalian was likely to have been relatively modest.
As in the therocephalian Glanosuchus, the ridges in Massetognathus are situated within the respiratory chamber, in front of the primary palate.
At present, the earliest evidence for elevated respiration rates is found in Glanosuchus, a primitive therocephalian of the middle Late Permian (approximately 260 million yr ago).
Stance and gait in the hind limb of a therocephalian mammal like reptile.
The skeleton of a baurioid therocephalian therapsid from the Lower Triassic (Lystrosaurus zone) of South Africa.
Essentially, the fossils discovered at Kotelnich indicate during mid-Permian times, saber-toothed Gorynychus or therocephalians were the top predator and gorgonopsians were much smaller animals, while several million years later in late Permian ecosystems, their roles reversed and gorgonopsians became as big as a tiger and the top predator, while therocephalians turned into small insectivores.