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Orcinus citoniensis is an extinct species of orca identified in the Late Pliocene of Italy and the Early Pleistocene of England. It was smaller than the modern killer whale (O. orca), 4 m (13 ft) versus 7 to 10 m (23 to 33 ft), and had around 8 more teeth in its jaw.
The orca (Orcinus orca), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. It is the only extant species in the genus Orcinus and is recognizable by its black-and-white patterned body. A cosmopolitan species, it inhabits a wide range of marine environments, from Arctic to Antarctic regions to tropical seas.
In 1846, zoologist John Edward Gray put the false killer whale in the genus Orcinus, which had been known as the killer whale (Orcinus orca). Until 1861, when the first carcasses washed up on the shores of Kiel Bay, Denmark, the species was presumed extinct.
A pair of orcas working in concert have been killing great whites along a stretch of South African coastline since at least 2017, plundering the sharks’ nutrient-rich livers and discarding the rest.
MORE: Key Largo tree cactus becomes 1st-ever US species to become extinct due to rising sea levels. Some of the new species discovered include anemones, urchins, corals, some shrimp and a squat ...
The genus Orcinus was published by Leopold Fitzinger in 1860, [4] its type species is the orca named by Linnaeus in 1758 as Delphinus orca.Taxonomic arrangements of delphinids published by workers before and after Fitzinger, such as John Edward Gray as Orca in 1846 and Orca (Gladiator) in 1870, are recognized as synonyms of Orcinus.
However, the Atlantic population of gray whales (Eschrichtius robustus) became extinct in the 18th century, and the baiji (or Chinese river dolphin, Lipotes vexillifer) was declared "functionally extinct" after an expedition in late 2006 failed to find any in the Yangtze River.
MORE: Key Largo tree cactus becomes 1st-ever US species to become extinct due to rising sea levels. Colossal Biosciences, a U.S.-based biotechnology company, plans to use the process of de ...