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nounfrom 230 million to 190 million years ago; dinosaurs, marine reptiles; volcanic activity
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of or relating to or denoting the first period of the Mesozoic era
Definition that contains triassic
- pangaea (plate tectonics) a hypothetical continent including all the landmass of the earth prior to the Triassic period when it split into Laurasia and Gondwanaland
- pangea (plate tectonics) a hypothetical continent including all the landmass of the earth prior to the Triassic period when it split into Laurasia and Gondwanaland
- theropod any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs
- therapsida extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic
- genus herrerasaurus primitive theropod found in Argentina; early Triassic
- bird-footed dinosaur any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs
- superorder labyrinthodonta extinct amphibians typically resembling heavy-bodied salamanders or crocodiles and having a solid flattened skull and conical teeth; Devonian through Triassic
- labyrinthodonta extinct amphibians typically resembling heavy-bodied salamanders or crocodiles and having a solid flattened skull and conical teeth; Devonian through Triassic
- order rhynchocephalia tuataras; extinct forms from middle Triassic
- division cynodontia a division of the order Therapsida from the Triassic period comprising small carnivorous tetrapod reptiles often with mammal-like teeth