Lopingian

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m (Protected "Lopingian" [move=sysop])
(see the Pelycosauria page)
 
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As the biggest animals around, the fearsome looking, but herbivorous, pareiasaurs were nevertheless not free of danger. They had outlasted the carnivorous [[anteosauria]]n dinocephalians, but now the previously small and insignificant gorgonopsians had evolved to large forms (up to the size of a modern lion or bear) to take their place. These animals, the equivalent of the sabre-toothed cat of the [[Cenozoic]] era, used their enormous canines to bring down the ox- to rhino sized pareiasaurs. Gorgonopsians and pareiasaurs may even have formed a "co-adaptive pair" (like the ''Smilodon''-mammoth 'relationship' of the Pleistocene); the gorgonopsians evolved in larger, more robust and larger fanged forms (for example ''Dinogorgon'' and ''Inostrancevia'') whereas their pareiasaur prey become more armoured (for example ''Pareiasaurus'' and ''Scutosaurus''). Both groups became simultaneously extinct and the end of the Permian.
As the biggest animals around, the fearsome looking, but herbivorous, pareiasaurs were nevertheless not free of danger. They had outlasted the carnivorous [[anteosauria]]n dinocephalians, but now the previously small and insignificant gorgonopsians had evolved to large forms (up to the size of a modern lion or bear) to take their place. These animals, the equivalent of the sabre-toothed cat of the [[Cenozoic]] era, used their enormous canines to bring down the ox- to rhino sized pareiasaurs. Gorgonopsians and pareiasaurs may even have formed a "co-adaptive pair" (like the ''Smilodon''-mammoth 'relationship' of the Pleistocene); the gorgonopsians evolved in larger, more robust and larger fanged forms (for example ''Dinogorgon'' and ''Inostrancevia'') whereas their pareiasaur prey become more armoured (for example ''Pareiasaurus'' and ''Scutosaurus''). Both groups became simultaneously extinct and the end of the Permian.
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Although they had an obsolete body design by the time their apex ended a few species of the [[Pelycosauria]] managed to hold out until this period, by which time their descendants had truly taken over from them.
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Latest revision as of 22:12, 5 January 2011

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