Tortoise

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tortoise : any of a family (Testudinidae) of terrestrial turtles — Webster

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Tortoises are a family, Testudinidae. Testudinidae is a Family under the order Testudines and suborder Cryptodira. There are fourteen extant families of the order Testudines, an order of reptile commonly known as turtles, tortoises, and terrapins. The suborder Cryptodira is a suborder of Testudines that includes most living tortoises and turtles. Cryptodira differ from Pluerodia in that they lower their necks and pull the heads straight back into the shells, instead of folding their necks sideways along the body under the shells’ marginals. The testudines are some of the most ancient reptiles alive. Tortoises are shielded from predators by a shell. The top part of the shell is the carapace, the underside is the plastron, and the two are connected by the bridge.

The carapace is fused to both the vertebrae and ribcage, and tortoises are unique among vertebrates in that the pectoral and pelvic girdles are inside the ribcage rather than outside. Tortoises can vary in dimension from a few centimeters to two meters. They are usually diurnal animals with tendencies to be crepuscular depending on the ambient temperatures. They are generally reclusive animals. Tortoises are the longest living land animal in the world, although the longest living species of tortoise is a matter of debate. Galápagos tortoises are noted to live over 150 years, but an Aldabra giant tortoise named Adwaita may have been the longest living at an estimated 255 years. In general, most tortoise species can live 80–150 years. — Wikipedia

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Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • California builds a 'Noah's Ark' to protect...
    on August 27, 2021 at 3:48 pm

    It was just before sunrise in July when the botanists Naomi Fraga and Maria Jesus threw on backpacks and crunched their way across a brittle alkaline flat in the hottest corner of the Mojave Desert. Their mission: to rescue a tiny plant teetering on the brink of extinction.

  • Lizards, snakes and turtles: Dispelling the myths...
    on August 24, 2021 at 2:10 pm

    Reptiles are all the rage. Mochi the bearded dragon is a viral sensation, with over 1.8 million views on YouTube. Meanwhile, Chris Pratt is singing to his bearded dragon while walking it on a leash, and he is just one of many other celebrities with pet reptiles. It is obvious that having reptiles as pets has gained popularity in recent years.

  • Watch this slow but deadly tortoise hunt a baby...
    on August 23, 2021 at 3:00 pm

    A predator doesn't need to have the quickest speed or reflexes to catch a bird. In a paper publishing August 23 in the journal Current Biology, researchers report the first documented evidence of a tortoise going in for the kill: biting the head of, killing, and eating a tern chick. This is the first time such behavior has been captured on camera, and it's likely not the only case of tortoise bird slaughter that's occurred.

  • Rescuers race to save tortoises in France's burnt...
    on August 20, 2021 at 4:23 pm

    In a deadly silent and scorched landscape, French scientist Dominique Guicheteau lies on his front, plunges his hand under a rock and brings out a Hermann's tortoise.

  • French wildfires have destroyed one of the most...
    on August 19, 2021 at 1:30 pm

    For three days, the Massif des Maures in the south of France has burned, and along with it the Plaine des Maures nature reserve—one of the Mediterranean's jewels of biodiversity, unique in all of Europe.