Devonian and Permian
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AGESDevonian and Permian
carboniferousOf, relating to, or denoting the fifth period of the Paleozoic era, between the Devonian and Permian periods
therapsidone of a group of Permian and Jurassic reptiles considered to be direct ancestors of mammals
therapsidsTHERAPSID, one of a group of Permian and Jurassic reptiles considered to be direct ancestors of mammals
triassicOf, relating to, or denoting the earliest period of the Mesozoic era, between the Permian and Jurassic periods
therapsidAn extinct reptile of a Permian and Triassic order, the members of which are related to the ancestors of mammals
therapsidsAn extinct reptile of a Permian and Triassic order, the members of which are related to the ancestors of mammals
synapsidsA fossil reptile of a Permian and Triassic group, the members of which show increasingly mammalian characteristics and include the ancestors of mammals
synapsidA fossil reptile of a Permian and Triassic group, the members of which show increasingly mammalian characteristics and include the ancestors of mammals
pelycosaurA large extinct reptile of the late Carboniferous and Permian periods, typically having a line of long bony spines along the back supporting a sail-like crest
pelycosaursA large extinct reptile of the late Carboniferous and Permian periods, typically having a line of long bony spines along the back supporting a sail-like crest
dicynodontsA herbivorous, mammallike fossil reptile of the late Permian and Triassic periods, with beaked jaws and no teeth apart from two tusks in the upper jaw of the male
dicynodontA herbivorous, mammallike fossil reptile of the late Permian and Triassic periods, with beaked jaws and no teeth apart from two tusks in the upper jaw of the male