Shark genera

Isurus (meaning "equal tail") is a genus of mackerel sharks in the family Lamnidae, commonly known as the mako sharks. They are largely pelagic, and are fast, predatory fish capable of swimming at speeds of up to .

Carcharhinus is the type genus of the family Carcharhinidae, the requiem sharks. One of 10 genera in its family, it contains over half of the species therein. It contains 36-38 extant and eight extinct species to date, with likely more species yet to be described.

Sphyrna is a genus of hammerhead sharks with a cosmopolitan distribution in the world's oceans. Members of Sphyrna have a tendency to inhabit coastal waters along the intertidal zone rather than the open ocean, as their prey such as invertebrates, fish, rays, small crustaceans, and other benthic organisms hide in the sands and sediment along these zones. Members of Sphyrna are also known by synonyms such as Zygaena, Cestracion, and Sphyrichthys. The earliest species described of this genus was Sphyrna zygaena by Carl Linnaeus in 1758, while the latest described member, Sphyrna alleni, was desc

Lamna is a genus of mackerel sharks in the family Lamnidae, containing two extant species: the porbeagle (L. nasus) of the North Atlantic and Southern Hemisphere, and the salmon shark (L. ditropis) of the North Pacific.

thumb|253px|right|Prickly dogfish, Oxynotus bruniensis thumb|253px|right|Angular roughshark, Oxynotus centrina

Carcharodon (from Ancient Greek κάρχαρος (kárkharos), meaning "sharp, jagged", and ὀδούς (odoús), meaning "tooth", and thus, "sharp tooth/jagged tooth") is a genus of sharks within the family Lamnidae, colloquially called the "white sharks." The only extant member is the great white shark (Carcharodon carcharias). Extinct species include C. hubbelli and C. hastalis. The first appearance of the genus may have been as early as the Early Miocene or Late Oligocene. Carcharocles megalodon is still argued by some paleontologists (e.g. Michael D. Gottfried, Leonard Compagno, and Ewan Fordyce) to be a

Somniosus is a widely distributed genus of deepwater dogfish sharks in the family Somniosidae. Several members of the genus are believed to attain lengths up to , thus ranking among the largest of sharks.

The sixgill sharks are a genus, Hexanchus, of deepwater sharks in the family Hexanchidae. These sharks are characterized by a broad, pointed head, six pairs of gill slits, comb-like, yellow lower teeth, and a long tail. The largest species can grow up to 8 m long and weigh over 600 kg (1320 lb). They are continental shelf-dwelling and abyssal plain scavengers with a keen sense of smell and are among the first to arrive at carrion, together with hagfish and rattails. They show a characteristic rolling motion of the head when feeding.

Chlamydoselachus is a genus of sharks and the sole extant member of the family Chlamydoselachidae, in the order Hexanchiformes. It contains two extant and four extinct species. The most widely known species still surviving is the frilled shark (Chlamydoselachus anguineus). It is known as a living fossil, along with Chlamydoselachus africana, also known as the southern African frilled shark, which is only found along coastal areas of South Africa. The only two extant species of this genus are deep-sea creatures which are typically weakened in areas closer to the surface. While the two extant sp

Echinorhinus is the only extant genus in the family Echinorhinidae, either a family within the large order Squaliformes or their own monotypic order Echinorhiniformes. The two extant species possess enlarged denticles forming prominent spines or thorns on their skin.

Scyliorhinus is a genus of catsharks in the family Scyliorhinidae. This genus is known in the fossil records from the Cretaceous period, late Albian age to the Pliocene epoch.

Negaprion is a genus of requiem sharks in the family Carcharhinidae. It contains the two extant species of lemon sharks: the lemon shark (N. brevirostris) of the Americas, and the sicklefin lemon shark (N. acutidens) of the Indo-Pacific. Both species are large, slow-moving, bulky sharks inhabiting shallow coastal waters, and can be identified by their short, blunt snouts, two dorsal fins of nearly equal size, and uniform yellowish brown or gray coloration.

Galeus is a genus of deepwater catshark, belonging to the family Pentanchidae, commonly known as sawtail catsharks in reference to a distinctive saw-toothed crest of enlarged dermal denticles, found along the upper edges of their caudal fins. They are found in the Atlantic, the western and central Pacific, and the Gulf of California, inhabiting deep waters at or close to the sea floor. Members of this genus are rather small, slim sharks with firm bodies and thick, rough skin. Their heads are usually fairly long and pointed, and have large mouths with well-developed furrows at the corners. They

thumb|250x250px|Fossil tooth of Odontaspis acutissima from the lower Burdigalian of Hérault, France. Max Rouger Collection. Odontaspis (from 'tooth') and 'shield') is a genus of sand shark with two extant species.

Apristurus is a genus of catsharks, the family Pentanchidae, the deepwater catsharks. The species in this genus are commonly known as the ghost or demon catsharks.

Centrophorus is a genus of squaliform sharks. These deep-water sharks, found in temperate and tropical oceans throughout the world, are characterized by grey or brown bodies, large green eyes, and spines on both dorsal fins. These spines give them their name, from Greek , kentron meaning "thorn" and φέρειν, pherein meaning "to bear".

Deania is a genus of long-snouted, deepwater dogfish sharks in the family Centrophoridae.

Chiloscyllium is a genus of sharks in the family Hemiscylliidae.

Rhizoprionodon is a genus of requiem sharks, and part of the family Carcharhinidae, commonly known as sharpnose sharks because of their long, pointed snouts.

Etmopterus is a genus of lantern sharks in the squaliform family Etmopteridae. They are found in deep sea ecosystems of the Atlantic, Indian and Pacific Oceans.

Isistius is a genus of dogfish sharks in the family Dalatiidae. They are commonly known as cookiecutter sharks. Members of the genus are known for their unusual behaviour and dentition.

Cephaloscyllium is a genus of catsharks, and part of the family Scyliorhinidae, commonly known as swellsharks because of their ability to inflate their bodies with water or air as a defense against predators. These sluggish, bottom-dwelling sharks are found widely in the tropical and temperate coastal waters of the Indian and Pacific Oceans. They have stocky, spindle-shaped bodies and short, broad, and flattened heads. The mouth is capacious, containing many small teeth and lacking furrows at the corners. The two dorsal fins are placed far back on the body, with the first much larger than the

Hemiscyllium is a genus of sharks in the family Hemiscylliidae.

Scoliodon is a genus of requiem sharks in the family Carcharhinidae. It was formerly thought to include only a single Indo-Pacific species, the spadenose shark (S. laticaudus), but recent taxonomic research has found an additional species, the Pacific spadenose shark (S. macrorhynchos).

Cirrhigaleus is a genus of sharks in the Squalidae (dogfish) family, which is part of the Squaliformes order.

Centroscyllium is a genus of big-eyed, deepwater dogfishes with no anal fin, a grey or black-brown body, and dorsal spines, with the second one being much larger than the first. Seven extant species are described.

Atelomycterus is a genus of coloured catsharks in the family Atelomycteridae.

Centroscymnus is a genus of squaliform sleeper sharks in the family Somniosidae and of the phylum chordata.

Halaelurus is a genus of catsharks in the family Pentanchidae.

Pristiophorus is a genus of sawsharks found in the Pacific, Atlantic and Indian oceans. Members of this genus differ from sixgill sawsharks of the genus Pliotrema in having five gill slits. Their rostral sawteeth lack prominent transverse ridges on the basal ledges, and the large teeth are not posteriorly serrated.

Schroederichthys is a genus of coloured catsharks in the family Atelomycteridae.

Haploblepharus is a genus of deepwater catsharks, belonging to the family Pentanchidae, containing four species of shysharks. Their common name comes from a distinctive defensive behavior in which the shark curls into a circle and covers its eyes with its tail. The genus is endemic to southern Africa, inhabiting shallow coastal waters. All four species are small, stout-bodied sharks with broad, flattened heads and rounded snouts. They are characterized by very large nostrils with enlarged, triangular flaps of skin that reach the mouth, and deep grooves between the nostrils and the mouth. Shysh

Asymbolus is a genus of catsharks in the family Pentanchidae, the deepwater catsharks.

Bythaelurus is a genus of sharks belonging to the family Pentanchidae, the deepwater catsharks. The genus Bythaelurus Compagno 1988 was first described as a subgenus of Halaelurus Gill 1862 based on several morphological characteristics including a soft body with thin skin, a bluntly rounded snout without a pointed, knob-like tip, and eyes not noticeably elevated on the dorsal surface of the head. Members of this genus are generally found in deep water and have more somber body coloration.

Hemitriakis is a genus of houndsharks in the family Triakidae.

Carcharias, also known as sand tiger sharks, is a genus of mackerel sharks belonging to the family Carchariidae, of which it is the only extant member. Once bearing many prehistoric species, all have gone extinct with the exception of the critically endangered sand tiger shark.

Parmaturus is a genus of deepwater catsharks in the family Pentanchidae. Four species were described in 2007 and another in 2019 with more species likely to be described in the near future.

Holohalaelurus is a genus of deepwater catshark belonging to the family Pentanchidae, commonly known as Izak catsharks or hallelujah sharks.

genus of fishes

Lamiopsis is a genus of shark in the family Carcharhinidae found in Indian and Pacific Ocean. This genus was previously considered to be monotypic. However, a recent taxonomic study revealed that the western central Pacific populations were a separate species.

Poroderma is a genus of catsharks, and part of the family Scyliorhinidae. The color of these sharks are usually grey with dark stripes. They are found in South Africa and are nocturnal. They live preferably in shore areas, close to the bottom, to depths of 100 m. They prefer small caves and crevices. Their diet usually consists of crustaceans, but they also feed on small fish. Their average size is between 60 and 80 cm, with a maximum total length of about 100 cm. Their birth size is about 15 cm. They are harmless to humans.

Brachaelurus (blind sharks) is the sole genus of sharks in the family Brachaeluridae in the order Orectolobiformes. Only two extant species of blind sharks occur, both of which are native to shallow coastal waters up to deep, off the eastern coast of Australia.

The genus Eridacnis, the ribbontail catsharks, is a small genus of fin-back catsharks in the family Proscylliidae. It currently consists of the following species: Eridacnis barbouri (Bigelow & Schroeder, 1944) (Cuban ribbontail catshark) Eridacnis radcliffei H. M. Smith, 1913 (pygmy ribbontail catshark) Eridacnis sinuans (J. L. B. Smith, 1957) (African ribbontail catshark)

Scymnodon is a genus of squaliform sharks in the family Somniosidae.

Parascyllium is a genus of carpetsharks in the family Parascylliidae. Species in this genus are distributed in waters around Australia.

Orectolobus is a genus of carpet sharks in the family Orectolobidae. They are commonly known as wobbegongs, although this name also applies to the other members of the family. They are found in shallow temperate and tropical waters of the western Pacific Ocean and eastern Indian Ocean, chiefly around Australia and Indonesia, although one species (the Japanese wobbegong, O. japonicus) occurs as far north as Japan.

Cirrhoscyllium is a genus of carpetsharks in the family Parascylliidae.

Squaliolus is a genus of deep-sea squaliform sharks in the family Dalatiidae.

genus of fishes

Ginglymostoma (from the Ancient Greek words γίγγλυμος (gínglumos), meaning "hinge", and στόμα (stóma), meaning "mouth") is a genus of shark in the family Ginglymostomatidae. There are two members in the genus. Members of this genus eat small fish and crustaceans, and are commonly quite lethargic unless provoked. Members of this genus have the ability to suck in water in order to remove snails from their shells in a manner that can be described as 'vacuum-like'.

Paragaleus is a genus of weasel shark in the family Hemigaleidae. This genus has a rounded or slightly pointed snout, short gill slits, and a broadly arched mouth. The upper teeth have long cusps, and no toothless spaces occur at the jaw midlines. The dorsal and pelvic fins and the lower caudal lobe are not falchate in shape. Known fossil species include P. pulchellus and P. antunesi.

Hemigaleus is a genus of weasel shark in the family Hemigaleidae. It is characterized by a rounded snout and short gill slits. The mouth is short and broadly arched; the teeth have very short cusps, without toothless spaces at the jaw midlines. The dorsal and pelvic fins, and the lower caudal lobe are strongly falchate. At one time or another, this genus has encompassed up to nine species, but most were eventually split off into other genera. Neogaleus Whitley, 1931 is a junior synonym of this genus.

Aulohalaelurus is a genus of coloured catsharks in the family Atelomycteridae.

Pentanchidae, the deepwater catsharks, is a family of sharks belonging to the order Carcharhiniformes. The deepwater catsharks are found in the Atlantic, Indian and Pacific oceans.

Scymnodalatias is a genus of squaliform sharks in the family Somniosidae.

The genus Proscyllium is a small genus of finback catsharks in the family Proscylliidae.

genus of fishes

Mollisquama is a genus of pocket sharks in the family Dalatiidae. There are two known species each only known from a single specimen; one found off the coast of Chile and the other found in the Gulf of Mexico.

Mitsukurina is a genus of mackerel shark in the family Mitsukurinidae. It contains one extant species, the goblin shark (M. owstoni) and more extinct species. The genus was described by American ichthyologist David Starr Jordan in 1898 and named in honour of Kakichi Mitsukuri.

Galeocerdo is a genus of ground shark. Only a single species, G. cuvier, the tiger shark, is extant. The earliest fossils date back to the early Eocene epoch, (Ypresian), around 56–47.8 Million years ago. While historically considered a member of the requiem shark family Carcharhinidae, it is currently considered to be the only member of the family Galeocerdonidae. While this genus was historically considered diverse, including 21 extinct species, morphometric analysis conducted in 2021 suggested that the diversity of the genus included only 5 extinct species (including the Eocene †G. clarkens