Triassic

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Definition/MeaningWord/Phrase
any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs bird-footed dinosaur , theropod , theropod dinosaur
one of the oldest known dinosaurs; late Triassic; cannibalistic coelophysis
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 conodont
division of the order Therapsida from the Triassic period comprising small carnivorous tetrapod reptiles often with mammal-like teeth Cynodontia , division Cynodontia
late Triassic carnivorous saurischian dinosaurs genus Coelophysis
primitive theropod found in Argentina; early Triassic genus Eoraptor , genus Herrerasaurus
primitive ornithischian dinosaur found in Argentina; early Triassic genus Pisanosaurus
extinct primitive birds of the Triassic period; 70 million years before archaeopteryx genus Protoavis
extinct reptiles of the later Triassic period Ictodosauria , order Ictodosauria
extinct amphibians typically resembling heavy-bodied salamanders or crocodiles and having a solid flattened skull and conical teeth; Devonian through Triassic Labyrinthodonta , Labyrinthodontia , superorder Labyrinthodonta , superorder Labyrinthodontia
tuataras; extinct forms from middle Triassic order Rhynchocephalia , Rhynchocephalia
extinct terrestrial reptiles having teeth set in sockets; of the late Permian to Triassic order Thecodontia , Thecodontia
extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic order Therapsida , Therapsida
(plate tectonics) a hypothetical continent including all the landmass of the earth prior to the Triassic period when it split into Laurasia and Gondwanaland Pangaea , Pangea
most primitive avian type known; extinct bird of the Triassic having birdlike jaw and hollow limbs and breastbone with dinosaur-like tail and hind limbs protoavis
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