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• n  extinct reptiles of the Permian to Jurassic considered ancestral to mammals

• Synapsida
• subclass Synapsida

News & Articles

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• New fossil species found in Mozambique reveals new data on ancient mammal relatives
  In the remote province of Niassa, Mozambique, a new species and genus of fossil vertebrate was found. The species is a distant relative of living mammals and is approximately 256 million years old. This new species belongs to a group of animals called synapsids. Synapsida includes a number of extinct lineages that dominated the communities on land in the Late Permian (260-252 million years ago ...
  Dec. 5, 2013 - Science Daily