diplodocus a huge quadrupedal herbivore with long neck and tail; of late Jurassic in western North America
titanosaur,
titanosaurian amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail; of the Cretaceous mostly in the southern hemisphere
argentinosaur huge herbivorous dinosaur of Cretaceous found in Argentina
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Wiktionary
Substantiv
dinosaur -
Any of various extinctreptiles belonging to the Dinosauria, existing between about 230 million and 65 million years ago.
dinosaur -
A person or organisation which is very old or has very old-fashioned views or is not willing to change and adapt.
dinosaur -
Anything that is no longer in common use or practice.
Wikipedia
Dinosaurs are a diverse group of animals that were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period (about 230 million years ago) until the end of the Cretaceous (about 65 million years ago). The extinction of most dinosaur species occurred during the Cretaceous–Tertiary extinction event. The fossil record indicates that birds evolved from theropod dinosaurs during the Jurassic period.
OmegaWiki Dictionary
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dinosaur A vertebrate animal that dominated terrestrial ecosystems for over 160 million years, first appearing approximately 230 million years ago. (source: Wikipedia)