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There are over 1,000 species from 500 genera of extinct, non avian dinosaurs that have been found, which is estimated to only be a tiny fraction of the species that did exist. However, birds are considered dinosaurs. Today, there are over 10,000 species of birds that have been discovered.

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How many kinds of volcanoes are in the world?

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What are popular dinosaur fossils in Montana?

Many of the world's most iconic dinosaurs were first discovered in Montana. Some of Montana's dinosaurs include:TyrannosaurusTriceratopsDeinonychusMaiasauraHypacrosaurusAnkylosaurusDaspletosaurusTorosaurusAllosaurusApatosaurusZephyrosaurusMontanaceratopsAvaceratopsTroodonTenontosaurusSaurornitholestesStegosaurusEiniosaurusAchelousaurusAlbertosaurusEdmontosaurusCorythosaurus


Did the dinosaurs extinct at once?

No, not all at once. Throughout the 150 million year "reign" of the dinosaurs, all kinds of groups of dinosaurs have flourished then died out. Dinosaurs living in the Triassic Period were not the same as dinosaurs living in the Cretaceous period. However, the final blow to the dinosaurs that caused them all to die out was the K-T mass extinction that occurred 65 million years ago.


Were all dinosaurs reptiles?

No way! There were thousands of species of reptiles that lived both during, before, and after the dinosaurs lived on earth. There were the synapsid reptiles, as well as the anapsid reptiles, which were mostly gone when the dinosaurs arrived. There were also many diapsid reptiles that lived during the time the dinosaurs did. Such species include deinosuchus, dimetrodon, gorgonops, Quetzalcoatlus, and rutiodon. Dinosaurs were not reptiles themelves. They evolved from reptiles, many had warm blood even feathers,


What are the living ancestors of dinosaurs?

Birds are considered the living ancestors of dinosaurs. Modern birds evolved from a group of two-legged dinosaurs known as theropods, which also included the iconic Tyrannosaurus rex and Velociraptor. Birds share many similar traits with their dinosaur ancestors, such as hollow bones and feathers.