Prehistoric shark genera

thumb|Life restoration of O. obliquus thumb|350x350px|Block with five Otodus obliquus teeth from the Ypresian of Khouribga, Morocco. Max Rouger Collection. Otodus is an extinct, cosmopolitan genus of mackerel shark which lived from the Paleocene to the Pliocene epochs.

Squalicorax, commonly known as the crow shark, is a genus of extinct lamniform shark known to have lived during the Cretaceous period. The genus had a global distribution in the Late Cretaceous epoch. Multiple species within this genus are considered to be wastebasket taxa due to morphological similarities in the teeth.

thumb|265x265px|Psychodus sp. Teeth.from the cenomanian – turonian of Dallas Texas Eagle Ford Shell FM USA Ptychodus (from 'fold' and 'tooth') is a genus of extinct large durophagous (shell-crushing) lamniform sharks from the Cretaceous period, spanning from the Albian to the Campanian. Fossils of Ptychodus teeth are found in many Late Cretaceous marine sediments worldwide.

thumb|Scapanorhynchus texanus, Menuha Formation (Upper Cretaceous), southern Israel. thumb|Near-complete fossil of S. lewisii, under special lighting

Aquilolamna is an extinct genus of shark-like elasmobranch from the Late Cretaceous (Turonian)-aged Agua Nueva Formation of Mexico. It is currently known to contain only one species, A. milarcae, also known as the eagle shark, and it is classified in its own family Aquilolamnidae, which has been tentatively assigned to the mackerel sharks.

Cretalamna is a genus of extinct otodontid shark that lived from the latest Early Cretaceous to Eocene epoch (about 103 to 46 million years ago). It is considered by many to be the ancestor of the largest sharks to have ever lived, such as Otodus angustidens, Otodus chubutensis, and Otodus megalodon.

Cosmopolitodus is an extinct genus of mackerel shark that lived between thirty and one million years ago during the late Oligocene to the Early Pleistocene epochs. Its type species is Cosmopolitodus hastalis. In 2021, Isurus planus was reassigned to the genus, and thus became the second species C. planus. However, some researchers still consider both species of Cosmopolitodus as species of Carcharodon. A possible third species, C. xiphodon was proposed, though it is now placed as junior synonym of Carcharodon plicatilis.

Cardabiodon (; meaning 'Cardabia tooth') is an extinct genus of large mackerel shark that lived about 95 to 91 million years ago (Ma) during the Cenomanian to Turonian of the Late Cretaceous. It is a member of the Cardabiodontidae, a family unique among mackerel sharks due to differing dental structures, and contains the two species C. ricki and C. venator. Cardabiodon fossils have been found in Australia, North America, England, and Kazakhstan. It was likely an antitropical shark that inhabited temperate neritic and offshore oceans between 40° and 60° paleolatitude, similar to the modern porb

Pochitaserra ( Pochita saw) is an extinct genus of sawshark in the family Pristiophoridae. It was discovered in the Bahía Inglesa Formation in Chile, and is named after the character Pochita from the manga Chainsaw Man by Tatsuki Fujimoto. It is a monotypic taxon represented by the type species Pochitaserra patriciacanalae.

Cretodus is an extinct genus of large mackerel sharks belonging to the proposed family Pseudoscapanorhynchidae. Cretodus lived during the Late Cretaceous, ranging from the Cenomanian to the Coniacian (approximately 100 to 89 million years ago). The genus is well-known from strata deposited in the Western Interior Seaway (North America), and from the Late Cretaceous of Europe, Africa, and possibly Asia. Cretodus is primarily represented in the fossil record by isolated teeth and vertebral centra, though a couple of associated dentitions and vertebral columns have been found.

Pseudorhina is an extinct genus of squatiniform shark closely related to modern angelsharks. Fossils are known from the Late Jurassic and Early Cretaceous of Europe.

Striatolamia is an extinct genus of sharks belonging to the family Odontaspididae. These extinct sharks lived from the Early Paleocene to Late Miocene (61.7 to 10.3 Ma).

Anomotodon is an extinct genus of shark related to the extant goblin shark (Mitsukurina owstoni). The distribution of Anomotodon fossils is worldwide, in formations indicating that members of the genus lived from the Early Cretaceous epoch through the Eocene epoch, and perhaps through the Oligocene as well. Described species include A. novus, A. plicatus, A. principalis, and A. multidenticula.

Carcharomodus is an extinct genus of lamnid shark. Its only species is Carcharomodus escheri, commonly nicknamed the serrated mako shark or '''Escher's mako shark'. It is an extinct lamnid that lived during the Miocene and that was formerly thought to have been transitional between the broad-toothed "mako" Cosmopolitodus hastalis and the modern great white, but is now considered to be an evolutionary dead-end with the discovery of Carcharodon hubbelli''. Fossil examples have been found along northern Atlantic coastlines and in parts of Western and Central Europe.

Kenolamna is an extinct genus of mackerel shark from the Cretaceous period known only from isolated teeth. It is named in honor of Kenneth McNamara, former curator of Paleontology at the Western Australian Museum. It is tentatively placed in the family Otodontidae, and is closest in design to Cretalamna and Paleocarcharodon though it is unclear how closely related it is to either. Currently, it is a monotypic genus containing only the species K. gunsoni.

Eogaleus is an extinct genus of requiem shark from the Eocene epoch. It contains a single species, E. bolcensis. It is known from multiple articulated individuals from the Bolca Konservat−Lagerstätte of the Ypresian of Italy. It was a shallow water species.

Pseudocorax is an extinct genus of mackerel sharks that lived during the Late Cretaceous. It contains six valid species that have been found in Europe, the Middle East, North Africa, and North America. It was formerly assigned to the family Anacoracidae, but is now placed in its own family Pseudocoracidae along with Galeocorax. The former species "P." australis and "P." primulus have been reidentified as species of Echinorhinus and Squalicorax, respectively.