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Archelon is an extinct marine turtle from the Late Cretaceous, and is the largest turtle ever to have been documented, with the biggest specimen measuring 4.6 m (15 ft) from head to tail and 2.2–3.2 t (2.4–3.5 short tons) in body mass.
The largest extant turtle is the leatherback sea turtle (Dermochelys coriacea), reaching a maximum total length of 3 m (10 ft) and a weight of 961 kg (2,119 lb). [1] [96] The second-largest extant testudine is the Loggerhead sea turtle. It tends to weight slightly more average weight than the green sea turtle, and reaches more massive top sizes.
The leatherback sea turtle (Dermochelys coriacea), sometimes called the lute turtle, leathery turtle or simply the luth, is the largest of all living turtles and the heaviest non-crocodilian reptile, reaching lengths of up to 2.7 metres (8 ft 10 in) and weights of 500 kilograms (1,100 lb).
Measuring nearly four metres in length, the species is thought to be the largest in Europe. 72-million-year-old turtle ‘is one of the largest to have ever lived’ Skip to main content
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The family includes some of the largest sea turtles that ever existed. The largest, Archelon, had a head one metre (39 in) long. Like most sea turtles, they had flattened bodies and flippers for front appendages; protostegids had minimal shells like leatherback turtles of modern times.
Louisiana was once "largely written off" as a place for sea turtles to nest. That might now be changing – and helping Kemp's ridley sea turtles survive in the process. World's most endangered ...
A study of large turtles from the Yangtze River reported an average weight of 25 kg (55 lb), although not all specimens were definitively identified as Rafetus. [7] The turtle’s carapace (shell) typically measures over 50 cm (20 in), with the largest recorded at 86 cm (34 in) in straight length. Curved carapace lengths of up to 106 cm (42 in ...