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''Ninjemys oweni'' ("Owen's Ninja Turtle") is an extinct large
meiolaniid Meiolaniidae is an extinct family of large, probably herbivorous stem-group turtles with heavily armored heads and tails known from South America and Australasia. Though once believed to be cryptodires, they are not closely related to any living ...
stem-turtle from Pleistocene Queensland (
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
). It resembled its relative, '' Meiolania'', save that the largest pair of horns on its head stuck out to the sides, rather than point backwards. It is only known from a mostly complete skull and the distal portion of a tail.


Discovery and taxonomy

The remains of ''Ninjemys'' were found at the King's Creek locality in Queensland in 1879 by G. F. Bennett, an Australian collector. The King's Creek deposit is believed to be of Pleistocene age, though the precise dating is uncertain. Despite the fact that Bennett correctly identified the remains as that of a turtle, when they were sent to the Natural History Museum,
Richard Owen Sir Richard Owen (20 July 1804 – 18 December 1892) was an English biologist, comparative anatomist and paleontologist. Owen is generally considered to have been an outstanding naturalist with a remarkable gift for interpreting fossils. Owe ...
mixed up the remains with the vertebrae of '' Megalania'', and subsequently with the foot bones of '' Diprotodon''. He later described better remains of the related genus ''Meiolania'' from Lord Howe Island, so it was realised that this first known
meiolaniid Meiolaniidae is an extinct family of large, probably herbivorous stem-group turtles with heavily armored heads and tails known from South America and Australasia. Though once believed to be cryptodires, they are not closely related to any living ...
was actually a turtle. It was subsequently described by A. S. Woodward as ''Meiolania oweni''. Woodward (1888) notes that "In 1881, a tail, completely sheathed in bony armour like that of '' Glyptodon,'' was found at the same spot in King's Creek whence had been obtained he ''Ninjemys'' holotype skull. Gafney (1992) notes that this consists of a "tail club and single tail ring", this is assumed to belong to the holotype individual. In 1992, anatomical differences with the type species ''M. platyceps'' led to its placement in the new genus ''Ninjemys'', which was named in honor of the Teenage Mutant Ninja Turtles. The paper explained the etymology as "Ninja, in allusion to that totally rad, fearsome foursome epitomizing shelled success; emys, turtle."Gaffney, E. S. 1992.
''Ninjemys'', a new name for "''Meiolania" oweni'' (Woodward), a Horned Turtle from the Pleistocene of Queensland"
''American Museum Novitates''. 3049: 1–10
Like other meiolaniids, ''N. oweni'' is believed to have been an herbivore. It reached in carapace length, its weight is estimated at .


References

Pleistocene reptiles of Australia Meiolaniformes Prehistoric turtle genera Taxa named by Eugene S. Gaffney Teenage Mutant Ninja Turtles Extinct turtles Monotypic prehistoric reptile genera {{paleo-turtle-stub