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from the GNU version of the Collaborative International Dictionary of English

  • An extinct order of reptiles found in the Permian and Triassic formations in South Africa. In some respects they resembled carnivorous mammals. Called also Theromorpha.

from The Century Dictionary and Cyclopedia

  • An order of extinct Reptilia, so called from the resemblance of the dentition in some respects to that of mammals.


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