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In each jaw row, from front to back, Mosasaurus had: two premaxillary teeth, twelve to sixteen maxillary teeth, and eight to sixteen pterygoid teeth on the upper jaw and fourteen to seventeen dentary teeth on the lower jaw. The teeth were largely consistent in size and shape with only minor differences throughout the jaws except for the smaller ...
Mosasaurs possessed a thecodont dentiton, meaning that the roots were cemented deeply into the jaw bone. Mosasaurs did not use permanent teeth but instead constantly shed them. Replacement teeth developed within a pit inside the roots of the original tooth called the resorption pit. This is done through a distinctively unique eight-stage process.
Thalassotitan had in each jaw row from front to back: two premaxillary teeth, twelve maxillary teeth, at least six pterygoid teeth (the pterygoids were not fully preserved), and fourteen dentary teeth. The dentary teeth are generally flatter by the side than the maxillary teeth. Heterodonty is present, meaning that tooth shape changes down the ...
The described fossils were of a tooth and jaw fragment recovered from a marl pit from Monmouth County, New Jersey, which Mitchell described as "a lizard monster or saurian animal resembling the famous fossil reptile of Maestricht", implying that the fossils had affinities with the then-unnamed M. hoffmannii holotype from Maastricht.
Russell (1967, pp. 123–124) [6] defined the Mosasaurinae as differing from all other mosasaurs as follows: "Small rostrum present or absent anterior to premaxillary teeth. Fourteen or more teeth present in dentary and maxilla. Cranial nerves X, XI, and XII leave lateral wall of opisthotic through two foramina.
An intact prehistoric mastodon jaw was discovered in the backyard of a Hudson Valley house after the homeowner initially saw a pair of teeth poking up by a plant, according to state officials.
Teeth near the tip of the jaw were pointed, teeth near the rear were roughly rectangular and triangular teeth could be found between them. [56] Everhart reported physical evidence of shark bite in the mosasaur genera Clidastes, Platecarpus, and Tylosaurus. [57]
A side-by-side comparison of a typical "crushing" mosasaur tooth (left, Igdamanosaurus) and a typical "cutting" mosasaur tooth (right, Mosasaurus). Teeth of Prognathodon seem to contain characteristics of both. It is worth noting that P. overtoni displays heterodonty similar to other mosasaurines, such as Globidens and Carinodens. For instance ...
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