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Mounted skeletons of Tyrannosaurus (left) and Apatosaurus (right) at the AMNH. Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research.
This list of nicknamed dinosaur fossils is a list of fossil non-avian dinosaur specimens given informal names or nicknames, in addition to their institutional catalogue numbers. It excludes informal appellations that are purely descriptive (e.g., "the Fighting Dinosaurs", "the Trachodon Mummy").
List of dinosaur specimens with documented taphonomic histories; List of pathological dinosaur specimens; List of dinosaur specimens preserved with agonistic and feeding traces; List of dinosaur specimens with preserved soft tissue
Predatory dinosaurs from this time period included the tyrannosaurids Tyrannosaurus, Nanotyrannus (which may just be a juvenile of the former) and Dryptosaurus, the ornithomimids Ornithomimus, Dromiceiomimus, Struthiomimus, the oviraptorids Anzu, Leptorhynchos and Ojoraptorsaurus, the troodontids Pectinodon, Paronychodon and Troodon, the ...
This list of dinosaur specimens with documented taphonomic histories enumerates those fossil dinosaur specimens that have been subjected to focused efforts aimed at reconstructing the events following the animal's death and the processes by which its remains were preserved in the fossil record.
tr This is a list of stratigraphic units from which dinosaur body fossils have been recovered. Although Dinosauria is a clade which includes modern birds, this article covers only Mesozoic stratigraphic units. Units listed are all either formation rank or higher (e.g. group).
The nature of the crushing on the femur and tibia, along with size of the bite marks, indicates that these bones were bitten through by another Tyrannosaurus rex. There is also a set of smaller, parallel tooth marks nearby on the shaft that are not attributable to an adult T. rex. Explanations for this behavior range from response to over ...
Tyrannosauroid hindlimbs are longer relative to body size than almost any other theropods, and show proportions characteristic of fast-running animals, including elongated tibiae and metatarsals. [3] These proportions persist even in the largest adult Tyrannosaurus , [ 13 ] despite its probable inability to run. [ 14 ]