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Scaldicetus is an extinct genus of highly predatory macroraptorial sperm whale.Although widely used for a number of extinct physeterids with primitive dental morphology consisting of enameled teeth, Scaldicetus as generally recognized appears to be a wastebasket taxon filled with more-or-less unrelated primitive sperm whales.
During the late 2010s and 2020s, fossils of large isolated sperm whale teeth were reported from various Miocene and Pliocene localities mostly along the Southern Hemisphere. These teeth have been identified to be of similar size and shape with that of the L. melvillei holotype and may be species of Livyatan.
Fossil mysticetes with wide, toothless palates are inferred to bulk-feed and the first occurrence of such whales is in the late Oligocene, approximately 4 to 5 million years after the first toothless mysticetes appeared. [7] Structurally, Aetiocetus possesses teeth that are quite similar to primitive odontocetes, such as Squalodon.
The first fossil found consisted of an incomplete skull with a skull cap and a broken mandible with some teeth. Based on the detail of the teeth, the molars suggest that the animal could rend and tear flesh. Wear, in the form of scrapes on the molars, indicated that Pakicetus ground its teeth as it chewed its food
The whale's remains suggest it's a smaller relative of Basilosaurus cetoides, which lived along Alabama's coast 34-40 million years ago. ... “We would go out and pick up shark teeth and fossil ...
Like in other raptorials, and unlike in the modern sperm whale, Zygophyseter had tooth enamel. [8] [9] [10] Like in Acrophyseter, the mandibular foramen takes up about 40% of the lower jawbone. The teeth of the upper jaw form an angle of nearly 120 degrees between the crown and the root, which is possibly a characteristic shared by all ...
Brygmophyseter is a member of a fossil stem group of hyper-predatory macroraptorial sperm whales from the Miocene (often shortened to "raptorial"). The other members are Acrophyseter , Albicetus , Livyatan , and Zygophyseter , and these five whales have in common enamel-coated teeth in both the upper and lower jaws which were used in hunting ...
They may be numerous, with some dolphins bearing over 100 teeth in their jaws. At the other extreme are the narwhals with their single long tusks and the almost toothless beaked whales with tusk-like teeth only in males. [20] In most beaked whales the teeth are seen to erupt in the lower jaw, and primarily occurs at the males sexual maturity. [21]