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Model of a dinosaur egg. Dinosaur reproduction shows correlation with archosaur physiology, with newborns hatching from eggs that were laid in nests. [1] [2] Dinosaurs did not nurture their offspring as mammals typically do, and because dinosaurs did not nurse, it is likely that most dinosaurs were capable of surviving on their own after hatching. [3]
At present, two species of Tyrannosaurus are considered valid; the type species, T. rex, and the earlier in age and more recently discovered T. mcraeensis. As the archetypal theropod, Tyrannosaurus has been one of the best-known dinosaurs since the early 20th century and has been featured in film, advertising, postal stamps, and many other media.
Fossilized sauropod eggs displayed at Indroda Dinosaur and Fossil Park. Dinosaur eggs are the organic vessels in which a dinosaur embryo develops. When the first scientifically documented remains of non-avian dinosaurs were being described in England during the 1820s, it was presumed that dinosaurs had laid eggs because they were reptiles. [1]
Tarbosaurus (/ ˌ t ɑːr b ə ˈ s ɔːr ə s / TAR-bə-SOR-əs; meaning "alarming lizard") is a genus of large tyrannosaurid dinosaur that lived in Asia during the Late Cretaceous epoch, about 70 million years ago (Maastrichtian age).
Set in an anachronistic and fantastical prehistoric world, the series is about the survival and bond between a Neanderthal man Spear and a female Tyrannosaurus rex named Fang [2] as they struggle day-to-day and battle against various carnivorous dinosaurs, prehistoric mammals and other dangerous animals, along with more advanced groups of Homo sapiens that also live in their world, including ...
Over half of the known T. rex specimens appear to have died within six years of reaching sexual maturity, a pattern that is also seen in other tyrannosaurs and in some large, long-lived birds and mammals today. These species are characterized by high infant mortality rates, followed by relatively low mortality among juveniles.
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Further exploration during the Cretaceous period leads Ally to discover a Tyrannosaurus rex nest filled with eggs. She defends the nest from a Struthiomimus, earning the mother T. Rex's respect to the point where she allows Ally to touch her. The meteor that marked the end of the dinosaur's reign then impacts Earth, blasting Ally back into the ...