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  • 10.04.2019
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Raptorial sperm whales

By Richard Alleyne , Science Correspondent. The mammals that roamed the Prehistoric seas more than 12 million years ago could swallow a man whole, and fed mainly on other whales. The fossilized skull and jaw of the gigantic creature, which was over 43ft long with a ten foot head and huge teeth that ripped prey to shreds, were found off the coast of Peru. The fictional Moby Dick was a sperm whale and the new species Leviathan melvillei , which was driven to extinction by climate change, has been named in honour of Herman Melville, the author of the classic novel.
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Gigantic Prehistoric Whale Hunted Other Whales

Raptorial sperm whales
Raptorial sperm whales
Raptorial sperm whales
Raptorial sperm whales
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Gigantic Prehistoric Whale Hunted Other Whales | Live Science

The modern giant sperm whale Physeter macrocephalus, one of the largest known predators, preys upon cephalopods at great depths. Lacking a functional upper dentition, it relies on suction for catching its prey; in contrast, several smaller Miocene sperm whales Physeteroidea have been interpreted as raptorial versus suction feeders, analogous to the modern killer whale Orcinus orca. Whereas very large physeteroid teeth have been discovered in various Miocene localities, associated diagnostic cranial remains have not been found so far. Here we report the discovery of a new giant sperm whale from the Middle Miocene of Peru approximately million years ago , Leviathan melvillei, described on the basis of a skull with teeth and mandible. With a 3-m-long head, very large upper and lower teeth maximum diameter and length of 12 cm and greater than 36 cm, respectively , robust jaws and a temporal fossa considerably larger than in Physeter, this stem physeteroid represents one of the largest raptorial predators and, to our knowledge, the biggest tetrapod bite ever found. The appearance of gigantic raptorial sperm whales in the fossil record coincides with a phase of diversification and size-range increase of the baleen-bearing mysticetes in the Miocene. We propose that Leviathan fed mostly on high-energy content medium-size baleen whales.
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Macroraptorial sperm whale

Livyatan is an extinct genus of sperm whale containing one species: L. The genus name was inspired by the biblical sea monster Leviathan , and the species name by Herman Melville , the author of the famous book Moby-Dick about an albino bull sperm whale. It was found in the Pisco Formation of Peru and lived during the Tortonian stage of the Miocene epoch , about 9.
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Macroraptorial sperm whales were highly predatory whales of the sperm whale family Physeteroidea of the Miocene epoch that hunted large marine mammals , including other whales, using their large teeth. Likewise, they were all likely the apex predator of their habitats, comparable to the modern day killer whale Orcinus orca , and achieved great lengths, with one species— Livyatan —measuring about The macroraptorial sperm whales— Acrophyseter , Brygmophyseter , Livyatan , and Zygophyseter —are an informal grouping of genera without a family designation. All species are known by at least a skull.
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