Description: This Daspletosaurus bone fossil is from the Judith River Formation in Montana.The fossil is about 1 1/2" x 1/2".I am unsure which part of the dinosaur the bone piece is from.Fossil comes in a unique display case and includes a laminated information card. All fossils sold are authentic fossils, no replicas. Daspletosaurus Daspletosaurus (meaning "frightful lizard") is a genus of tyrannosaurid dinosaur that lived in Laramidia between about 79.5 and 74 million years ago, during the Late Cretaceous Period Daspletosaurus is closely related to the much larger and more recent tyrannosaurid Tyrannosaurus rex. Like most tyrannosaurids, Daspletosaurus was a bipedal predator equipped with dozens of large, sharp teeth. Daspletosaurus had the small forelimbs typical of tyrannosaurids, although they were proportionately longer than in other genera.As an apex predator, Daspletosaurus was at the top of the food chain, probably preying on large dinosaurs like the ceratopsid Centrosaurus and the hadrosaur Hypacrosaurus. In some areas, Daspletosaurus coexisted with another tyrannosaurid, Gorgosaurus, though there is some evidence of niche differentiation between the two. While Daspletosaurus fossils are not as common as other tyrannosaurid fossils, the available specimens allow some analysis of the biology of these animals, including social behavior, diet, and life history. While very large by the standard of modern predators, Daspletosaurus was not the largest tyrannosaurid. Adults could reach a length of 26–30 ft from snout to tail, and a body mass of 2.2–3.3 ton. Daspletosaurus had a massive skull that could reach more than 3 ft in length. The bones were heavily constructed and some, including the nasal bones on top of the snout, were fused for strength. Large openings in the skull reduced its weight. An adult Daspletosaurus was armed with about six dozen teeth that were very long but oval in cross section rather than blade-like. Unlike its other teeth, those in the premaxilla at the end of the upper jaw had a D-shaped cross section, an example of heterodonty always seen in tyrannosaurids. Unique skull features included the rough outer surface of the upper jaw bone and the pronounced crests around the eyes on the lacrimal, postorbital, and jugal bones. The eye socket was a tall oval, somewhere in between the circular shape seen in Gorgosaurus and the 'keyhole' shape of Tyrannosaurus. DA006
Price: 34.99 USD
Location: Davenport, Iowa
End Time: 2024-02-19T01:36:08.000Z
Shipping Cost: 4.99 USD
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