Prehistoric toothed whales

Odobenocetops () is an extinct genus of small toothed whale known from Chile and Peru. Its fossils are found in Miocene-aged marine strata of the Bahía Inglesa Formation and Pisco Formation. Two species of Odobenocetops are currently recognized, O. peruvianus and the slightly younger O. leptodon.

Livyatan is an extinct genus of macroraptorial sperm whale containing one known species: L. melvillei. The genus name was inspired by the biblical sea monster Leviathan, and the species name by Herman Melville, the author of the famous novel Moby-Dick about a white bull sperm whale. Herman Melville often referred to whales as "Leviathans" in his book. It is mainly known from the Pisco Formation of Peru during the Tortonian stage of the Miocene epoch, about 9.9–8.9 million years ago (mya); however, finds of isolated teeth from other locations such as Chile, Argentina, the United States (Califor

Acrophyseter is a genus of extinct sperm whale that lived in the Late Miocene off the coast of what is now Peru. The genus comprises two species: A. deinodon and A. robustus. It is part of a group of macroraptorial sperm whales that all share several features for hunting large prey, such as deeply rooted and thick teeth. Acrophyseter measured in length, making it the smallest macroraptorial sperm whale currently known. Because of its short pointed snout and strongly curved front teeth, it probably fed on the marine vertebrates of its time, such as seals and other whales.

Brygmophyseter, known as the biting sperm whale, is an extinct genus of toothed whale in the sperm whale family with one species, B. shigensis. When it was first described in 1994, the species was placed in the genus Scaldicetus based on tooth morphology, but this was later revised in 2006. A month later since the naming of Brygmophyseter, another study classified this species into the genus Naganocetus, which is considered to be a junior synonym. The only known specimen, a nearly complete skeleton, was dated to be around 16–15 million years old (middle Miocene). The Brygmophyseter holotype is

Kentriodontidae is an extinct family of odontocete whales related to modern dolphins. The Kentriodontidae lived from the Oligocene to the Pliocene before going extinct.

species of mammal

Zygophyseter is an extinct genus of sperm whale that lived during the Tortonian age of the Late Miocene 11.2 to 7.6 million years ago. The genus contains a single species, Zygophyseter varolai, known from a single specimen from the Pietra Leccese Formation in Italy. It was a member of a stem group of fossil macroraptorial sperm whales (often shortened to "raptorial") also including Brygmophyseter, Acrophyseter, and Livyatan. It probably grew to be around in length and shared some characteristics with other raptorials, such as large teeth with tooth enamel that were functional in both the upper

Eurhinodelphis ("well-nosed dolphin") is an extinct genus of Miocene cetacean. Its fossils have been found in Belgium, France, and Maryland.

Squalodontidae or the shark-toothed dolphins is an extinct family of large toothed whales who had long narrow jaws. Squalodontids are known from all continents except Antarctica, from the Oligocene to the Neogene, but they had a maximal diversity and global distribution during the Late Oligocene and Early to Middle Miocene ().

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.

Semirostrum ceruttii is an extinct porpoise that lived between 5 and 1.5 million years ago (Ma), during the Pliocene epoch. The species is highly distinctive due to the extremely long symphysis on the lower jaw, reaching lengths of , while that of a modern porpoise is long. The main hypothesis regarding its use is that it probed along the sediment in the murky estuaries and shores of what is now California in search of food, which would easily be scooped up the symphysis and into the jaws. It is the only known species in the genus Semirostrum. The etymology of the name means "half beak",

Prosqualodon is an extinct genus of Early to Middle Miocene cetacean from Argentina, Australia, New Zealand, and Venezuela.

species of mammal (fossil)

Xenorophidae is an extinct family of dolphin-like odontocetes (toothed whales) that lived in the Southeastern United States during the Oligocene. They were among the first major groups of odontocetes to diversify in the fossil record and are notable for their ability to echolocate.

Patriocetus is an extinct genus of toothed whale.

Orycterocetus is an extinct genus of sperm whale from the Miocene of the northern Atlantic Ocean.

Aulophyseter is an extinct genus of sperm whales from the subfamily Physeterinae that existed during the Miocene.

Eurhinodelphinidae is an extinct family of toothed whales which lived from the Oligocene to the Miocene. Members of the family possessed an elongated jaw similar in appearance to a swordfish.

Waipatiidae is an extinct family of odontocetes currently known from the Oligocene of the Pacific Ocean and possibly Europe and the Caucasus.

genus of prehistoric whales

Parapontoporia is an extinct genus of lipotoid dolphin that lived during the Late Miocene to the Pliocene epochs. This genus can be found attributed across the North American coast of the Pacific Ocean. Fossils have been found in Tulare Formation of California and the Almejas Formation of Mexico.

Ankylorhiza (meaning "fused roots"; in reference to the type of dentition seen in early toothed whales) is an extinct genus of toothed whale that lived in what is now the United States during the Oligocene epoch, between 29 and 23.5 million years ago. The type and only known species is A. tiedemani, though two fossil skeletons may represent an additional, second species within the genus. Ankylorhiza was about long, with a long, robust skull bearing conical teeth that were angled forwards at the tip of the snout.

thumb|left|Skull

Allodelphinidae is a family of primitive platanistoid river dolphins found in marine deposits in the eastern North Pacific region, Alaska, and Japan.

Hemisyntrachelus is an extinct genus of cetacean.

Australodelphis mirus is an extinct Pliocene dolphin. A. mirus is known from fossils found in the Sørsdal Formation, Mule Peninsula, Vestfold Hills, East Antarctica. The genus has been described as an example of convergent evolution with beaked whales.

Physeterula was a prehistoric close relative of the sperm whale that lived in Europe and the United States during the Late Miocene-Early Pleistocene.

Diaphorocetus is an extinct genus of odontocete cetacean belonging to Physeteroidea. Its remains were found in the Monte León Formation of Argentina, dating to the Early Miocene.

Meherrinia is an extinct genus of inioid river dolphin from the Meherrin River, North Carolina, in the United States. First described in 2012, the dolphin is, in most respects, intermediate in form between the living Amazon river dolphin and the La Plata dolphin, although it is probably more closely related to the former. However, the fossil was discovered in what are believed to be marine deposits, dating from the late Miocene, whereas the Amazon river dolphin is an exclusively freshwater species. Meherrinia therefore was, as of 2012, the only known marine genus of the family Iniidae, althoug

Agorophius is an extinct genus of toothed whale that lived during the Oligocene period, approximately , in the waters off what is now South Carolina.

Xiphiacetus is an extinct genus of cetacean known from the Miocene (early Burdigalian to late Tortonian, of Europe and the U.S. East Coast.

Simocetus (from simus, "pug-nosed", and cetus, "whale") is an extinct genus of toothed whale that lived during the Oligocene period, approximately , making it the oldest named toothed whale, although older unnamed toothed whales exist.

Macrodelphinus is an extinct genus of primitive odontocete known from Early Miocene marine deposits in California.

thumb|left|E. giulii skull