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54 relations: Adaptive radiation, Angelshark, Basking shark, Batoidea, Bullhead shark, Carboniferous, Carcharhiniformes, Carpet shark, Charles Lucien Bonaparte, Chimaera, Chondrichthyes, Clade, Cladoselachidae, Clasper, Class (biology), Cretaceous, Devonian, Dorsal fin, Elasmobranchii, Electric ray, Fish scale, Galeomorphii, Gill, Great white shark, Gulper shark, Hexanchiformes, Holocephali, Hybodontiformes, International Union for Conservation of Nature, IUCN Red List, Jurassic, Lamniformes, List of Elasmobranch cestodes, Myliobatiformes, Order (biology), Osteichthyes, Overfishing, Permian, Rajiformes, Sawfish, Sawshark, School shark, Shark, Shark liver oil, Skate (fish), Sperm, Squaliformes, Squalomorphii, Swim bladder, Tapetum lucidum, ..., Temperate climate, Tropics, Vulnerable species, Xenacanthida. Expand index (4 more) »
Adaptive radiation
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, creates new challenges, or opens new environmental niches.
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Angelshark
The angelsharks are a group of sharks in the genus Squatina in the family Squatinidae, which are unusual in having flattened bodies and broad pectoral fins that give them a strong resemblance to rays.
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Basking shark
The basking shark (Cetorhinus maximus) is the second-largest living shark, after the whale shark, and one of three plankton-eating shark species, along with the whale shark and megamouth shark.
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Batoidea
Batoidea is a superorder of cartilaginous fish commonly known as rays.
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Bullhead shark
The bullhead sharks are a small order (Heterodontiformes) of basal modern sharks (Neoselachii).
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Carboniferous
The Carboniferous is a geologic period and system that spans 60 million years from the end of the Devonian Period million years ago (Mya), to the beginning of the Permian Period, Mya.
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Carcharhiniformes
Carcharhiniformes, the ground sharks, with over 270 species, are the largest order of sharks.
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Carpet shark
Carpet sharks are sharks classified in the order Orectolobiformes.
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Charles Lucien Bonaparte
Charles Lucien Jules Laurent Bonaparte, 2nd Prince of Canino and Musignano (24 May 1803 – 29 July 1857), was a French biologist and ornithologist.
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Chimaera
Chimaeras the order Chimaeriformes, known informally as ghost sharks, rat fish (not to be confused with the rattails), spookfish (not to be confused with the true spookfish of the family Opisthoproctidae), or rabbit fish (not to be confused with the family Siganidae).
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Chondrichthyes
Chondrichthyes (from Greek χονδρ- chondr- 'cartilage', ἰχθύς ichthys 'fish') is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone.
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Clade
A clade (from κλάδος, klados, "branch"), also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".
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Cladoselachidae
Cladoselachidae is an extinct family of cartilaginous fishes and among the earliest predecessors of modern sharks.
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Clasper
In biology, a clasper is a male anatomical structure found in some groups of animals, used in mating.
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Class (biology)
In biological classification, class (classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank.
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Cretaceous
The Cretaceous is a geologic period and system that spans 79 million years from the end of the Jurassic Period million years ago (mya) to the beginning of the Paleogene Period mya.
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Devonian
The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya.
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Dorsal fin
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates such as fishes, cetaceans (whales, dolphins, and porpoises), and the (extinct) ichthyosaur.
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Elasmobranchii
Elasmobranchii is a subclass of Chondrichthyes or cartilaginous fish, including the sharks (superorder Selachii) and the rays, skates, and sawfish (superorder Batoidea).
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Electric ray
The electric rays are a group of rays, flattened cartilaginous fish with enlarged pectoral fins, composing the order Torpediniformes.
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Fish scale
The skin of most fishes is covered with scales, which, in many cases, are animal reflectors or produce animal coloration.
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Galeomorphii
Galeomorphii is a superorder of cartilaginous fishes which includes all modern sharks except the dogfish and its relatives.
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Gill
A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide.
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Great white shark
The great white shark (Carcharodon carcharias), commonly known as the great white or the white shark, is a species of large mackerel shark which can be found in the coastal surface waters of all the major oceans.
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Gulper shark
The gulper shark (Centrophorus granulosus) is a long and slender dogfish usually about three feet in length generally found in deep, murky waters all around the world.
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Hexanchiformes
The Hexanchiformes are the order consisting of the most primitive types of sharks, and numbering just seven extant species.
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Holocephali
The subclass Holocephali ("complete heads") is a taxon of cartilaginous fish in the class Chondrichthyes.
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Hybodontiformes
Hybodontiformes, also called hybodonts, are an extinct subset of Elasmobranchii (sharks, skates and rays) which existed from the Devonian to the Miocene.
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International Union for Conservation of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources.
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IUCN Red List
The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), founded in 1964, has evolved to become the world's most comprehensive inventory of the global conservation status of biological species.
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Jurassic
The Jurassic (from Jura Mountains) was a geologic period and system that spanned 56 million years from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period Mya.
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Lamniformes
The Lamniformes (from the Greek word, Lamna "fish of prey") are an order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae).
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List of Elasmobranch cestodes
Elasmobranch cestodes are parasitic tapeworms (class Cestoda), which infect elasmobranchs (sharks, rays and skates).
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Myliobatiformes
Myliobatiformes is one of the four orders of batoids, cartilaginous fishes related to sharks.
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Order (biology)
In biological classification, the order (ordo) is.
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Osteichthyes
Osteichthyes, popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue, as opposed to cartilage.
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Overfishing
Overfishing is the removal of a species of fish from a body of water at a rate that the species cannot replenish in time, resulting in those species either becoming depleted or very underpopulated in that given area.
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Permian
The Permian is a geologic period and system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic period 251.902 Mya.
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Rajiformes
Rajiformes is one of the four orders in the superorder Batoidea, flattened cartilaginous fishes related to sharks.
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Sawfish
Sawfishes, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw.
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Sawshark
A sawshark or saw shark is a member of a shark order (Pristiophoriformes) bearing a unique long, saw-like rostrum (snout or bill) edged with sharp teeth, which they use to slash and disable their prey.
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School shark
The school shark (Galeorhinus galeus) is a houndshark of the family Triakidae, and the only member of the genus Galeorhinus. Common names also include tope shark, snapper shark, and soupfin shark. It is found worldwide in temperate seas at depths down to about. It can grow to nearly long. It feeds both in midwater and near the seabed, and its reproduction is ovoviviparous. This shark is caught in fisheries for its flesh, its fins, and its liver, which has a very high vitamin A content. The IUCN has classified this species as "vulnerable" in its Red List of Threatened Species.
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Shark
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head.
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Shark liver oil
Shark liver oil is an oil obtained from the livers of sharks.
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Skate (fish)
Skates are cartilaginous fish belonging to the family Rajidae in the superorder Batoidea of rays.
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Sperm
Sperm is the male reproductive cell and is derived from the Greek word (σπέρμα) sperma (meaning "seed").
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Squaliformes
The Squaliformes are an order of sharks that includes about 126 species in seven families.
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Squalomorphii
Squalomorphii is a superorder of cartilaginous fishes, generally characterized by lacking traits such as an anal fin, nictitating membrane, or suborbital shelves in the cranium.
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Swim bladder
The swim bladder, gas bladder, fish maw or air bladder is an internal gas-filled organ that contributes to the ability of many bony fish (but not cartilaginous fish) to control their buoyancy, and thus to stay at their current water depth without having to waste energy in swimming.
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Tapetum lucidum
The tapetum lucidum (Latin: "bright tapestry; coverlet", plural tapeta lucida) is a layer of tissue in the eye of many vertebrates.
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Temperate climate
In geography, the temperate or tepid climates of Earth occur in the middle latitudes, which span between the tropics and the polar regions of Earth.
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Tropics
The tropics are a region of the Earth surrounding the Equator.
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Vulnerable species
A vulnerable species is one which has been categorized by the International Union for Conservation of Nature as likely to become endangered unless the circumstances that are threatening its survival and reproduction improve.
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Xenacanthida
Xenacanthida (or Xenacanthiforms) is an order of prehistoric sharks that appeared during the Lower Carboniferous period.
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Redirects here:
Elasmobranch, Elasmobranche, Elasmobranchian, Elasmobranchs, Plesioselachus, Protacrodontiformes, Sharks and rays, Squatinactiformes.
References
[1] https://en.wikipedia.org/wiki/Elasmobranchii
