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The zebra shark (Stegostoma tigrinum) is a species of carpet shark and the sole member of the family Stegostomatidae. It is found throughout the tropical Indo-Pacific , frequenting coral reefs and sandy flats to a depth of 62 m (200 ft).
G. cuvieri specimen, Museo di Storia Naturale di Verona. This species has had a complex taxonomic history. [1] One specimen of the species was initially misidentified by Volta (1796) as a fossil specimen of the great white shark (Carcharodon carcharias, at the time Squalus carcharias), and another as a fossil specimen of the zebra shark (Stegostoma tigrinum, at the time Squalus fasciatus).
The first shark-like chondrichthyans appeared in the oceans 400 million years ago, [1] developing into the crown group of sharks by the Early Jurassic. [2] Listed below are extant species of shark. Sharks are spread across 512 described and 23 undescribed species in eight orders. The families and genera within the orders are listed in ...
There are modern shell-crushing species, the largest being the Zebra shark, which reaches a maximum length of a little over 3.5 meters (12 feet) — not near as gigantic as Ptychodus.
Sharks portal; The Squaliformes / ˌ s k w ɒ l ɪ ˈ f ɔːr m iː z / are an order of sharks that includes about 126 species in seven families.. Members of the order have two dorsal fins, which usually possess spines, they usually have a sharp head, no anal fin or nictitating membrane, and five to seven gill slits.
Orectolobiformes: They are commonly referred to as the carpet sharks, including zebra sharks, nurse sharks, wobbegongs, and the whale shark. Pristiophoriformes: These are the sawsharks, with an elongated, toothed snout that they use for slashing their prey. Squaliformes: This group includes the dogfish sharks and roughsharks.
Leonard Compagno – international authority on shark taxonomy, best known for 1984 catalog of shark species (FAO) Jacques-Yves Cousteau – French naval officer, explorer, ecologist, filmmaker, innovator, scientist, photographer, author and researcher who studied the sea and all forms of life in water including sharks
The spiny dogfish (Squalus acanthias), spurdog, mud shark, or piked dogfish [4] is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. [5] While these common names may apply to several species, Squalus acanthias is distinguished by two spines (one anterior to each dorsal fin) and ...