Any evolutionary ancestor of the mammals

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  • protomammal — pro·to·mammal …   English syllables

  • protomammal — noun probably warm blooded; considered direct ancestor of mammals • Syn: ↑therapsid • Hypernyms: ↑synapsid, ↑synapsid reptile • Hyponyms: ↑Chronoperates paradoxus, ↑cynodont, ↑ …   Useful english dictionary

  • Chronoperates paradoxus — noun shrew sized protomammal from the Alberta region of Canada; from about 55 million years ago (much more recent than other mammal like reptiles) • Hypernyms: ↑therapsid, ↑protomammal • Member Holonyms: ↑Chronoperates, ↑genus Chronoperates …   Useful english dictionary

  • Daohugou Beds — Stratigraphic range: Middle Late Jurassic Type Geological formation Unit of Tiaojishan Formation?, Haifanggou Formation? Underlies Tuchengzi Formation Overlies Tiaojishan Formation …   Wikipedia

  • Jehol Biota — The Jehol Biota includes all the living organisms the ecosystem of northeastern China between 133 to 120 million years ago. This is the Lower Cretaceous ecosystem which left fossils in the Yixian Formation and Jiufotang Formation. It is also… …   Wikipedia

  • cynodont — noun small carnivorous reptiles • Hypernyms: ↑therapsid, ↑protomammal • Member Holonyms: ↑Cynodontia, ↑division Cynodontia …   Useful english dictionary

  • dicynodont — noun a kind of therapsid • Hypernyms: ↑therapsid, ↑protomammal • Member Holonyms: ↑Dicynodontia, ↑division Dicynodontia …   Useful english dictionary

  • order Therapsida — noun extinct mammal like reptiles found inhabiting all continents from the mid Permian to late Triassic • Syn: ↑Therapsida • Hypernyms: ↑animal order • Member Holonyms: ↑Synapsida, ↑subclass Synapsida • …   Useful english dictionary

  • synapsid — noun extinct reptile having a single pair of lateral temporal openings in the skull • Syn: ↑synapsid reptile • Hypernyms: ↑reptile, ↑reptilian • Hyponyms: ↑therapsid, ↑protomammal, ↑ict …   Useful english dictionary

  • synapsid reptile — noun extinct reptile having a single pair of lateral temporal openings in the skull • Syn: ↑synapsid • Hypernyms: ↑reptile, ↑reptilian • Hyponyms: ↑therapsid, ↑protomammal, ↑ictodosaur, ↑ …   Useful english dictionary

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