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Livyatan is the largest fossil sperm whale discovered, and was also one of the biggest-known predators, having the largest bite of any tetrapod. [1] [8] Diagram comparing the upper and lower size estimates of Livyatan (bottom three) with the size of mature sperm whales, including one of the largest individuals recorded (top three), and a human
Skull of Livyatan. Macroraptorial sperm whales were highly predatory whales of the sperm whale superfamily (Physeteroidea) of the Miocene epoch that hunted large marine mammals, including other whales, using their large teeth. They consist of five genera: Acrophyseter, Albicetus, Brygmophyseter, Livyatan and Zygophyseter. [1]
Zygophyseter varolai is an extinct sperm whale that lived during the Tortonian age of the Late Miocene 11.2 to 7.6 million years ago. It is known from a single specimen from the Pietra Leccese Formation in Italy.
This does not last in the fossil records, creating difficulty in studying fossil sharks. ... According to Kim, the livyatan is an ancient whale related to a modern sperm whale. Its skull is about ...
The fossil record suggests that sperm whales were more common in the Miocene, during which basal lineages (such as Zygophyseter and Brygmophyseter) existed; other fossil genera assigned to the Physeteridae include Ferecetotherium, Helvicetus, Idiorophus, Diaphorocetus, Aulophyseter, Orycterocetus, Scaldicetus, and Placoziphius, while kogiid ...
The exhibition was organized in 2018 into eight thematic areas containing more than 28 skeletons from the 27 species present in the collection, as well as 11 life-sized models including a baleen, five casts of fossils mostly discovered and studied by the team of the University of Pisa, such as that of Livyatan melvillei as well as from real ...
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 large ...
"The first Livyatan fossils discovered in Peru were originally dated to around 13-12 million years ago (mya) in the Serravallian Age of the Miocene, but this dating was later proven to be incorrect and revised to 9.9-8.9 mya " is perhaps overegging the blow by blow account.