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Procolophonids
Procolophonidae is an extinct family (biology), family of small, lizard-like parareptiles known from the Late Permian to Late Triassic that were distributed across Pangaea, having been reported from Europe, North America, China, South Africa, South America, Antarctica and Australia. The most primitive procolophonids were likely insectivorous or omnivorous, more Derived (phylogenetics), derived members of the clade developed Cusp (anatomy), bicusped molars, and were likely herbivorous feeding on high fiber vegetation or Durophagy, durophagous omnivores. Many members of the group are noted for spines projecting from the quadratojugal bone of the skull, which likely served a defensive purpose as well as possibly also for display. At least some taxa were likely fossorial burrowers. While diverse during the Early and Middle Triassic, they had very low diversity during the Late Triassic, and were extinct by the beginning of the Jurassic. Phylogeny The family is defined as all taxa more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phaanthosaurus
''Phaanthosaurus'' is an extinct genus of basal procolophonid parareptile from early Triassic (Induan stage) deposits of Nizhnii Novgorod, Russian Federation. It is known from the holotype PIN 1025/1, a mandible (a dentary). It was collected from Vetluga River, Spasskoe village and referred to the Vokhmian terrestrial horizon of the Vokhma Formation. It was first named by P. K. Chudinov and B. P. Vjushkov in 1956 and the type species is ''Phaanthosaurus ignatjevi''. In 2000, Spencer and Benton found ''Contritosaurus'' to be junior synonym of ''Phaanthosaurus''. ''C. simus'' Ivakhnenko, 1974 which is known from the holotype PIN 3355/1, a partial skull with right mandible from the same location, and from three paratypes, was recombined as ''P. simus''. They also found that the second species of ''Contritosaurus'', ''C. convector'' (PIN 3357/1, a mandible) is a junior synonym of ''P. simus''. Recent cladistic Cladistics ( ; from Ancient Greek 'branch') is an approach to b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
