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Duckbill Dinosaur Tooth Replica measures 2.2 inches long, base of tooth is 3/4 inch thick. Duckbill Dinosaur Tooth Replica is museum quality polyurethane resin cast, made in the USA. Edmontosaurus. Cretaceous Dakota and adjoining regions of the US and Canada.
Hadrosaurids or duck-billed dinosaurs, are members of the ornithischian family Hadrosauridae. This group is known as the duck-billed dinosaurs for the flat duck-bill appearance of the bones in their snouts. Hadrosaurids were facultative bipeds, with the young of some species walking mostly on two legs and the adults walking mostly on four. Their jaws were evolved for grinding plants, with multiple rows of teeth replacing each other as the teeth wore down.
The most recognizable aspect of hadrosaur anatomy is the flattened and laterally stretched rostral bones, which gives the distinct duck-bill look, and some members of the hadrosaurs also had massive crests on their heads, probably for display. In some genera, including Edmontosaurus, the whole front of the skull was flat and broadened out to form a beak, which was ideal for clipping leaves and twigs from the forests of Asia, Europe and North America. The back of the mouth contained thousands of teeth suitable for grinding food before it was swallowed. This has been hypothesized to have been a crucial factor in the success of this group in the Cretaceous compared to the sauropods.
Skin impressions of multiple hadrosaurs have been found. From these impressions, the hadrosaurs were determined to be scaled, and not feathered like some dinosaurs of other groups.
Hadrosaurs, much like sauropods, are noted for having their manus united in a fleshy, often nail-less pad.
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