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Closeup of M. hoffmannii teeth, with a replacement tooth developing inside the root of the lower right tooth. The features of teeth in Mosasaurus vary across species, but unifying characteristics include a design specialized for cutting prey, highly prismatic surfaces (enamel circumference shaped by flat sides called prisms), and two opposite ...
Mosasaur teeth are of rather uniform morphology (with a few exceptions, such as in Globidens) with a pointed and curved tooth crown that sits on a pedicel composed of bone. [7] The enamel surface is smooth and the crown is subdivided into a lingual and labial surface while the outer surface of the crown is made of enamel and the inner layer is ...
Instead, they primarily relied on stratigraphic associations and Cuvier's 1808 research on the holotype skull. Thus, in-depth research on the placement of Mosasaurus was not undertaken until the discovery of more complete mosasaur fossils during the late 19th century, which reignited research on the placement of mosasaurs among squamates. [8]
The smaller mosasaurs may have spent some time in fresh water, hunting for food. The largest mosasaur Mosasaurus hoffmannii was the apex predator of the Late Cretaceous oceans, reaching more than 11 metres (36 ft) in length and weighing up to 10 metric tons (11 short tons) in body mass. [14]
Globidens ("Globe teeth") is an extinct genus of mosasaurid oceanic lizard classified as part of the Globidensini tribe in the Mosasaurinae subfamily. Globidens belongs to the family Mosasauridae, which consists of several genera of predatory marine lizards of various sizes that were prevalent during the Late Cretaceous.
Four types of teeth are known from the animal: conical teeth of medium size without any wear facets, medium-sized conical teeth with two or three wear facets on their outer and inner faces, very large conical teeth without any wear facets, and small, relatively blunt D-shaped teeth with soft enamel (which may have represent developing teeth).
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 ...
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.
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