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Noun protomammal has 1 sense
  1. therapsid, protomammal - probably warm-blooded; considered direct ancestor of mammals
    --1 is a kind of synapsid, synapsid reptile
    --1 is a member of Therapsida, order Therapsida
    --1 has particulars: Chronoperates paradoxus; cynodont; dicynodont
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