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Topic: Gorgonopsia


  
  Skadi Forum - Mammal-like reptiles   (Site not responding. Last check: 2007-10-20)
The dicynodonts, with such characters as the temporal opening in the side of the skull, were clearly mammal-like reptiles, but with specializations like a horny beak and highly modified chewing action, they merely represent a very successful herbivorous branch of the mammal-like reptiles persisting until late in the Karoo period.
The carnivorous Gorgonopsia, after a humble beginning in Tapinocephalus Zone times, flourished in the succeeding Endothiodon and Cistecephalus Zones, but did not survive the end of the Permian period.
However, the other early mammal-like reptile group, the Therocephalia, were from the beginning a progressive and diversified group, and it is probably through them and their descendants, the cynodonts, that the line leading to mammals ran.
forum.skadi.net /printthread.php?t=12274   (3965 words)

  
 Introduction to the Gorgonopsia   (Site not responding. Last check: 2007-10-20)
The Gorgonopsia are synapsids, a major group of tetrapods that includes the mammals.
These long sharp teeth are reminiscent of the sabre-tooth cats of the Pleistocene, and enabled Lycaenops and other gorgonopsians to stab and tear large prey.
Despite their agility and fearsome teeth, the Gorgonopsia went extinct by the end of the Permian, along with most other synapsid groups.
www.ucmp.berkeley.edu /synapsids/gorgonopsia.html   (458 words)

  
 animals   (Site not responding. Last check: 2007-10-20)
The largest from well-known representatives of this fossil reptiles group was Inostrancevia alexandri, which 2 skeletons were found on the Malaya Severnaya Dvina river at the beginning of XXth centuries during excavation, headed by V. Amalitskii, the Professor from Warsaw University.
In a completely preservation postcranial skeleton is similar to analogous find of Gorgonopsia of genus Lycaenops from Permian South Africa, which skeleton structure resembles the skeleton of running animal, but the standing of front limb was primitive like before: the humerus is directed almost horizontal, the stricture of thing-bone is comparable with crocodile’s one.
In the skull structure there are many signs typical for Gorgonopsia: a long massive snout, wide pariental part of skull, simple pointed cheek teeth, very developed fangs.
www.kirov.ru /~kpm/english/animals.htm   (1844 words)

  
 South African Museum - Publications - Annals: Vols. 31-50   (Site not responding. Last check: 2007-10-20)
A contribution to the morphology of the Gorgonopsia.
Additions to our knowledge of the South African Gorgonopsia, preserved in the British Museum (Natural History).
The girdles and limbs of the Gorgonopsia of the Tapinocephalus zone.
www.museums.org.za /sam/collect/infosci/resjour2.htm   (1654 words)

  
 [No title]
Nevertheless the joint between the quadrate and articular was a tight one, with the articular firmly gripping the quadrate condyle, allowing only a hinge (and some transversal sliding) movement at the jaw joint, but no fore-aft sliding.
The theriodonts fall into three distinct groups, which can be considered infraorders or (if Theriodonta itself is considered an order rather than as is usually the case, a suborder) suborders: the Gorgonopsia; the Therocephalia, and the Cynodontia.
A fourth group, the Bauriamorpha, are now generally included under the Therocephalia.
bioweb.wku.edu /courses/Biol459/f2000/protected/mammevol.htm   (3112 words)

  
 University of the Witwatersrand, Johannesburg, Bernard Price Institute
Close relatives of these primitive South African therapsids are known elsewhere only from Russia and China in rocks of similar age.
All known major vertebrate groups from the Beaufort Group are represented in the Karoo Vertebrate Collection, with good collections of Dicynodontia, Gorgonopsia, Therocephalia and Cynodontia.
These fossils are available for study by accredited and approved researchers.
www.wits.ac.za /geosciences/bpi/collections.htm   (1278 words)

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