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The Mesozoic Era [3] is the era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceous Periods.It is characterized by the dominance of gymnosperms such as cycads, ginkgoaceae and araucarian conifers, and of archosaurian reptiles such as the dinosaurs; a hot greenhouse climate; and the tectonic break-up of Pangaea.
These finds extend considerably the known body size range of Mesozoic mammals. In fact, Repenomamus was larger than several small sympatric dromaeosaurid dinosaurs like Graciliraptor . [ 18 ] [ 10 ] Features of its shoulder and legs bones indicate a sprawling posture as in most of small to medium sized living therian mammals, with plantigrade feet.
Dinosaurs were the dominant terrestrial vertebrates of the Mesozoic Era, especially the Jurassic and Cretaceous periods. Other groups of animals were restricted in size and niches; mammals, for example, rarely exceeded the size of a domestic cat and were generally rodent-sized carnivores of small prey. [19]
Of all the phases Earth has been through, the Mesozoic Era stands out among the rest—even from off-world. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290 ...
Dinosaurs that lived in the Ross Dependency, a part of Antarctica within the Realm of New Zealand, include the tetanuran Cryolophosaurus.The Ross Dependency, unlike the Chatham Islands, is not actually part of New Zealand, and this is why it is excluded from the list above until sufficient evidence shows that it entered what was the sector of Gondwana that is now New Zealand.
The earliest marine reptile was Mesosaurus (not to be confused with Mosasaurus), which arose in the Permian period of the Paleozoic era. [2] During the Mesozoic era, many groups of reptiles became adapted to life in the seas, including such familiar clades as the ichthyosaurs, plesiosaurs (these two orders were once thought united in the group ...
Prehistoric animals of the Mesozoic Era ... Mesozoic animals by continent (10 C). Cretaceous animals (11 C) Jurassic animals (12 C, 2 P) Triassic animals (7 C, 3 P) C.
This list of Mesozoic birds is a comprehensive list of all Mesozoic dinosaurs that have been assigned to the clade Avialae (birds, in the broadest sense). The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomen dubium), or were not formally published (nomen nudum), as well as junior synonyms of more established names, and genera that are ...