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The flatback sea turtle was originally described as Chelonia depressa in 1880 by American herpetologist Samuel Garman.The genus Natator (meaning "swimmer") was created in 1908 by Australian ichthyologist Allan Riverstone McCulloch, and in the same scientific paper he described what he thought to be a new species, Natator tessellatus, thereby creating a junior synonym.
The seven existing species of sea turtles are the flatback, green, hawksbill, leatherback, loggerhead, Kemp's ridley, and olive ridley. [4] [5] Six of the seven sea turtle species, all but the flatback, are present in U.S. waters, and are listed as endangered and/or threatened under the Endangered Species Act. [6]
Cheloniidae - Cope, 1868. Cheloniidae is a family of typically large marine turtles that are characterised by their common traits such as, having a flat streamlined wide and rounded shell and almost paddle-like flippers for their forelimbs. They are the only sea turtles to have stronger front limbs than back limbs. [2]
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The flat-backed spider tortoise (Pyxis planicauda), more commonly known as the flat-tailed tortoise, and Madagascan flat-tailed tortoise, is a tortoise that belongs to the family Testudinidae. [4] The various common names for this small tortoise usually refer to the noticeably flattened nature of its oblong upper-shell or its tail.
Kesteven, 1969. (ex errore) Chelonia multicustata [sic] Márquez, 1990. (ex errore) The olive ridley sea turtle (Lepidochelys olivacea), also known commonly as the Pacific ridley sea turtle, is a species of turtle in the family Cheloniidae. The species is the second-smallest [4][5] and most abundant of all sea turtles found in the world.
The turtles have been monitored since the February 2013 hatching season, and Queensland's Department of Environment and Science collects the data as part of a longterm turtle-monitoring project. Around 70 turtle nests were observed in the 2022 hatching season. [2] A project to restore the habitat of flatback turtles was launched on 7 January 2014.
On the other hand, one scientific paper has claimed that the species can weigh up to 1,000 kg (2,200 lb) without providing more verifiable detail. [30] The leatherback turtle is scarcely larger than any other sea turtle upon hatching, as they average 61.3 mm (2.41 in) in carapace length and weigh around 46 g (1.6 oz) when freshly hatched. [24]