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The lemon shark was first named and described in 1868 by Felipe Poey. [7] He originally named it Hypoprion brevirostris, but later renamed it Negaprion brevirostris. [7] The lemon shark has also appeared in literature as Negaprion fronto and Carcharias fronto (Jordan and Gilbert, 1882), Carcharias brevirostris (Gunther, 1870), and Carcharhinus brevirostris (Henshall, 1891).
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 ...
The sicklefin lemon shark usually swims close to the bottom. Courtship behavior - a male (right) follows a female. A sluggish species, the sicklefin lemon shark is usually seen cruising sedately just above the sea bottom or lying still on it, as unlike most requiem sharks, it is capable of actively pumping water over its gills.
Nasolamia velox (C. H. Gilbert, 1898) (white-nose shark) Genus Negaprion [[Whitley, 1940. Negaprion acutidens Rüppell, 1837) (sickle-fin lemon shark) Negaprion brevirostris (Poey, 1868) (lemon shark) Genus Prionace Cantor, 1849. Prionace glauca (Linnaeus, 1758) (blue shark) Genus Rhizoprionodon Whitley, 1929. Rhizoprionodon acutus (Rüppell ...
The dermal denticles of a lemon shark, viewed through a scanning electron microscope. Unlike bony fish, sharks have a complex dermal corset made of flexible collagenous fibers and arranged as a helical network surrounding their body. This works as an outer skeleton, providing attachment for their swimming muscles and thus saving energy. [33]
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In biological taxonomy, a domain (/ d ə ˈ m eɪ n / or / d oʊ ˈ m eɪ n /) (Latin: regio [1]), also dominion, [2] superkingdom, realm, or empire, is the highest taxonomic rank of all organisms taken together. It was introduced in the three-domain system of taxonomy devised by Carl Woese, Otto Kandler and Mark Wheelis in 1990. [1]
The other species, Glikmanius careforum, was a similar length and draws similarities to the modern lemon shark, researchers said. Teeth of the species were found in various areas, with the walls ...