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Anteosaurus (meaning "Antaeus lizard") is an extinct genus of large carnivorous dinocephalian synapsid. It lived at the end of the Guadalupian (= Middle Permian) during the Capitanian age, about 265 to 260 million years ago in what is now South Africa. It is mainly known by cranial remains and few postcranial bones.
Olson (1962) notes that the Russian dinocephalian assemblages indicate environments tied to water, and Boonstra considered that the roughly contemporary Anteosaurus was a slinking crocodile-like semi-aquatic form. The long tail, weak limbs, and sprawling posture do indeed suggest some sort of crocodile-like existence.
Skeleton of the anteosaurine Titanophoneus potens: Scientific classification; ... †Anteosaurus; Anteosaurinae is an extinct subfamily of dinocephalian therapsids.
Anteosaurus overviewing the landscape. The largest carnivorous non-mammalian synapsids was the dinocephalian Anteosaurus, which was 5–6 m (16–20 ft) long, and weighed 500–600 kg (1,100–1,300 lb). [16] [17] Fully grown Titanophoneus from the same family Anteosauridae likely had a skull of 1 m (3.3 ft) long. [17]
Anteosauridae is an extinct family of large carnivorous dinocephalian therapsids that are known from the Middle Permian of Asia, Africa, and South America.These animals were by far the largest predators of the Permian period, with skulls reaching 80 cm in length in adult individuals, far larger than the biggest gorgonopsian.
Anteosaurus: A. magnificus: Beaufort West, Prince Albert, and Laingsburg Tapinocephalus A-Z. Several complete skulls, dentition, and partial postcranial skeleton. A large carnivorous anteosaur. Australosyodon: A. nyaphuli: Prince Albert and Tuinkraal Eodicynodon A-Z. A skull and mandible with a preserved left side. A dinocephalian.
Dinocephalians were generally large. The biggest herbivores (Tapinocephalus) and omnivores (Titanosuchus) may have weighed up to 2 tonnes (4,400 lb), and were some 4.5 metres (15 ft) long, while the largest carnivores (such as Titanophoneus and Anteosaurus) were at least as long, with heavy skulls 80 centimetres (31 in) long, and overall masses of around a half-tonne.
The anteosaur with the most complete skeleton, Titanophoneus, looks nothing like that and very little of the postcranial anatomy of Anteosaurus is known. Compare with my Anteosaurus [8] . I never got around to finishing getting my image reviewed, and looking back at it I'm dissatisfied with it so I might revise it.