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a. Any of various extinct terrestrial reptiles of the orders Saurischia and Ornithischia that existed during the Mesozoic Era, including both carnivores and herbivores and often reaching a gigantic size.
b. Any of various other large extinct reptiles, such as an ichthyosaur.
2. A relic of the past: "living dinosaurs of the world of vegetation" (John Olmsted).
3. One that is hopelessly outmoded or unwieldy: "The old, big-city teaching hospital is a dinosaur" (Peggy Breault).

[New Latin Dīnosauria, group name, from Dīnosaurus, former genus name : Greek deinos, monstrous + Greek sauros, lizard.]

di′no·saur′i·an (-sôr′ē-ən) n. & adj.
di′no·sau′ric (-sôr′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


adjDinosaurier-; dinosaurian fossilsDinosaurierfossilien pl
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
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"It also belongs to a dinosaurian fauna that just proceeds the iconic dinosaurian faunas in the latest Cretaceous that include some of the most famous dinosaurs, such as the Triceratops, predators like Tyrannosaurus rex, and duckbill dinosaurs like Edmotosaurus."
Titanosaurs are best known from Cretaceous-age rocks in South America, but other efforts by the team include new species discovered in Tanzania, Egypt, and other parts of the African continent that reveal a more complex picture of dinosaurian evolution on the planet.
With their strong, clawed hands and weak jaws, they appear to be the dinosaurian analog to today's aardvarks and anteaters."
On certain dinosaurian vertebrae from the Cretaceous of India and the Isle of Wight.
(2010): A Portuguese specimen of Camptosaurus aphanoecetes (Ornithopoda: Camptosauridae) increases the dinosaurian similarity among the Upper Jurassic Alcobaja and Morrison Formations.
"We are puzzled by the weird anatomy of Chilesaurus, which recalls different dinosaurian groups," said Novas.
There are no features to suggest that any of these teeth are dinosaurian or even ornithodiran, and at least some of them more likely belong to paracrocodylomorph pseudosuchians.
"Ultimately, this evolutionary flexibility helped birds survive the deadly meteorite impact which killed off all their dinosaurian cousins."
From fieldwork and lab studies and the historical evolution of paleontological research, this considers different theories of dinosaur natural history and extinction, provides an organization of the various taxa into a workable order, and compiles dinosaurian genera, including excluded genera or doubtful genera.
Palaeontologist John Ostrom's work in the 1970s describing the dinosaurian "raptor" Deinonychus reopened the debate with new evidence that supported a theropod ancestry for birds.