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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.
The orca (Orcinus orca), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. It is the only extant species in the genus Orcinus and is recognizable by its black-and-white patterned body. A cosmopolitan species, it is found in diverse marine environments, from Arctic to Antarctic regions to tropical seas.
In comparison, the modern killer whale has teeth around 8 cm (3.1 in) in height and 2.5 cm (0.98 in) in diameter. [3] Like the modern killer whale, the tooth lacks a coat of cementum. However, unlike the modern killer whale, O. paleorca had a circular tooth root as opposed to an oval, and the pulp extended more towards the back than the front. [2]
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]
The skull measures around 60 cm (24 in), in contrast to the 65 to 110 cm (26 to 43 in) skull of the modern killer whale. Like the modern killer whale, the snout is broad and relatively short, and the eye socket is relatively small. [3] It had 28 conical teeth in either jaw, unlike the modern killer whale which has, on average, 24. [1] The ...
Frosty, a white killer whale, was spotted off the coast of Newport Beach on April 29, 2024. Fasser quickly snatched her binoculars, taking a closer look, Rodriguez told McClatchy News in a phone ...
The fossil remains of Orcinus species are frequently teeth, deposited during the Pliocene, especially in Italy. Orcinus citoniensis is known by a well preserved skull and jaw. This specimen was an animal smaller than the orca, around 4 metres in length, and possessed a greater number of proportionally smaller teeth.
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