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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
- bird-footed dinosaur any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs
- coelophysis one of the oldest known dinosaurs; late Triassic; cannibalistic
- conodont small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes
- cynodontia a division of the order Therapsida from the Triassic period comprising small carnivorous tetrapod reptiles often with mammal-like teeth
- division cynodontia a division of the order Therapsida from the Triassic period comprising small carnivorous tetrapod reptiles often with mammal-like teeth
- genus coelophysis late Triassic carnivorous saurischian dinosaurs
- genus eoraptor primitive theropod found in Argentina; early Triassic