The anatomy and relationships of the Lower Permian reptile Araeoscelis

  title={The anatomy and relationships of the Lower Permian reptile Araeoscelis},
  author={Robert R. Reisz and David S. Berman and Diane M. Scott},
  journal={Journal of Vertebrate Paleontology},
ABSTRACT Two recently discovered skeletons of the enigmatic Lower Permian reptile Araeoscelis provide important, additional information on its osteology and permit a reassessment of its phylogenetic relationships. A combination of primitive and derived characters shared by Araeoscelis and Petrolacosaurus justifies their inclusion in the suborder Araeoscelidia as members of separate families and indicates that they represent the earliest, most primitive known stage in the adaptive radiation of… 

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