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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.
Megalochelys ("great turtle") is an extinct genus of tortoises that lived from the Miocene to Pleistocene.They are noted for their giant size, the largest known for any tortoise, with a maximum carapace length of over 2 m (6.5 ft) in M. atlas.
The largest known turtle ever was Archelon ischyros at 5 m (16 ft) long and 2,200 kg (4,900 lb). [280] Possible second-largest sea turtle was Protostega at 3.9 m (13 ft) in total body length. [281] [282] There is even a larger specimen of this genus from Texas estimated at 4.2 m (14 ft) in total length.
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
The species of turtle roamed modern-day Colombia ten million years ago. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ...
Skeletal mount of Archelon, which is considered as one of the largest turtles to have ever existed. There are many extinct turtles that vie for the title of the largest ever. [1] The largest freshwater turtle seems to be Stupendemys, with an estimated parasagittal carapace length of 2.86 m (9 ft 5 in) and weight of up to 1,145 kg (2,524 lb). [112]
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.
The Yangtze giant softshell turtle (Rafetus swinhoei), also known commonly as the Red River giant softshell turtle, the Shanghai softshell turtle, the speckled softshell turtle, and Swinhoe's softshell turtle, is an extremely rare species of turtle in the family Trionychidae. It may be the largest living freshwater turtle in the world.