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Altogether, the scientific name as a whole literally means "Lacepede's back snout". The common name "broadnose sevengill shark" refers to the seven gill slits the species possesses and the shape of its snout. Sometimes, the name is shortened to "sevengill shark" or simply "sevengill".
Broadnose sevengill shark (Notorynchus cepedianus) Scientific classification; Domain: Eukaryota: Kingdom: ... Broadnose sevengill shark (Notorynchus cepedianus ...
The genus name Heptranchias is from the Greek heptra meaning "seven arms", [clarification needed] and agchein meaning "throttle", referring to this shark's seven pairs of gill slits. Other common names for this species include one-finned shark, perlon shark, sevengill cow shark, sevengilled Mediterranean shark, sevengilled shark, sharpnose ...
For the first time, a number of broadnose sevengill sharks and at least one critically endangered soupfin shark are calling south Puget Sound home.. Researchers from Oregon State University ...
Meghan Holst studies the broadnose sevengill shark, so she was naturally concerned when record-setting rain this year altered the shark's nursery grounds in San Francisco Bay. But the species ...
The bluntnose sixgill shark resembles many of the fossil sharks from the Triassic period. A greater number of Hexanchus relatives occur in the fossil record than are alive today. They have one dorsal fin located near the caudal fin. The pectoral fins are broad, with rounded edges. The six gill slits give the shark its name.
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.
Heptranchias perlo (Bonnaterre, 1788) (sharpnose sevengill shark) †Heptranchias ezoensis Applegate & Uyeno, 1968 †Heptranchias howelli Reed, 1946 †Heptranchias karagalensis Kozlov in Zhelezko & Kozlov, 1999 †Heptranchias tenuidens Leriche, 1938