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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 .
[106] [107] The tortoise Megalochelys, of the Pleistocene epoch from what is now Pakistan and India, was even larger, at nearly 2.7 m (9 ft) in shell length [108] and 0.8–1.0 t (1,800–2,200 lb). [109] The Arrau turtle (Podocnemis expansa) is the largest of the side-necked turtles.
Both Megalochelys and Titanochelon reached sizes substantially greater than modern giant tortoises, with up to 2.4 m (7 ft 10 in) and 2 m (6 ft 7 in) shell lengths respectively. The phenomenon of animal species evolving in cache to unusually large size on islands (in comparison to continental relatives) is known as island gigantism or insular ...
The Seychelles giant tortoise (Aldabrachelys gigantea hololissa), also known as the Seychelles domed giant tortoise, is a tortoise subspecies in the genus Aldabrachelys.. It inhabited the large central granitic Seychelles islands, but was hunted in vast numbers by European sailors.
Tortoises removed include members of Aldabrachelys (from the Seychelles and Madagascar), Astrochelys [2] (Madagascar), Chelonoidis (South America and the Galápagos Islands), Stigmochelys [2] and Centrochelys (Africa), and the extinct Megalochelys (southern Asia). These species are also unique for their ability to remember patterns and spatial ...
Chelonoidis niger vandenburghi, also known as the Volcán Alcedo giant tortoise, the Alcedo Volcano giant tortoise or the Alcedo giant tortoise, is a subspecies of Galápagos tortoise endemic to the Galápagos archipelago in the equatorial eastern Pacific Ocean.
The Volcán Wolf giant tortoise (Chelonoidis niger becki), also known commonly as the Wolf Volcano giant tortoise [1] and the Cape Berkeley giant tortoise, is a subspecies of Galápagos tortoise in the family Testudinidae.
In prehistoric times, a large insular radiation of giant Chelonoidis existed on many West Indian islands, including the Bahamas, Greater Antilles and Lesser Antilles. While some species such as those on Curaçao, Anguilla, and Barbados are thought to have gone extinct during the Late Pleistocene, other species such as those on the Greater Antilles and the Bahamas are thought to have been ...