Petrolacosaurus
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Petrolacosaurus is an extinct genus of sauropsid from the late Carboniferous period. It was a small, 40-centimetre long reptile, and one of the earliest known reptiles with two temporal fenestrae. Thi
Petrolacosaurus BW
Skull fossil (specimen KUVP 8351)
Specimen KUVP 1424, an articulated foot fossil which serves as the holotype of Petrolacosaurus
Araeoscelidia
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Araeoscelidia or Araeoscelida is a clade of extinct tetrapods superficially resembling lizards, extending from the Late Carboniferous to the Early Permian. The group contains the genera Araeoscelis, P
Petrolacosaurus
…modern day as birds) and other famous extinct reptiles such as plesiosaurs, ichthyosaurs, and pterosaurs. However, Petrolacosaurus itself was part of Araeoscelidia, a short-lived early branch of the sauropsid family tree which went extinct prior to the middle Permian. The first Petrolacosaurus fossil was found in…
Protorothyris
Mesosaurus BW