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Risso's dolphin (Grampus griseus) is a marine mammal and dolphin, the only species of the genus Grampus.Some of the most closely related species to these dolphins include: pilot whales (Globicephala spp.), pygmy killer whales (Feresa attenuata), melon-headed whales (Peponocephala electra), and false killer whales (Pseudorca crassidens). [5]
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Risso's dolphin (Grampus griseus). Risso's dolphin, or Grampus (Grampus griseus), is a large species, up to 4 m long and weighing 400 kg, characterized by a short beak, a rounded, angular head, a high dorsal fin (which can resemble that of an Orca) and, above all, a dark skin almost always streaked with long, light scars, which can turn older ...
Owen compared the skull to those of the long-finned pilot whale (Globicephala melas), beluga whale (Delphinapterus leucas), and Risso's dolphin (Grampus griseus)–in fact, he gave it the nickname "thick toothed grampus" in light of this and assigned the animal to the genus Phocaena (a genus of porpoises) which Risso's dolphin was also assigned ...
Grampus, the genus and another name for Risso's dolphin, Grampus griseus; A synonym of the genus Orcinus; Another name for Orcinus orca, the killer whale or orca; Another name for the hellbender, a species of salamander; Another name for Mastigoproctus giganteus, a species of whip scorpion
Pelorus Jack (fl. 1888 – April 1912; pronounced / p ə ˈ l ɔːr ə s /) [1] was a Risso's dolphin (Grampus griseus) that was famous for meeting and escorting ships through a stretch of water in Cook Strait, New Zealand. The animal was reported over a 24 year period, from 1888 until his disappearance after 1912.
He states that the appearance of the grampus is often taken by whalemen to presage the appearance of the sperm whale. Melville writes that “He is of moderate octavo size, varying from fifteen to twenty-five feet in length”, which is much larger than the eight to thirteen feet of Risso's dolphin, also called a grampus. II.
The family Balaenidae, the right whales, contains two genera and four species. All right whales have no ventral grooves; a distinctive head shape with a strongly arched, narrow rostrum, bowed lower jaw; lower lips that enfold the sides and front of the rostrum; and long, narrow, elastic baleen plates (up to nine times longer than wide) with fine baleen fringes.