With a study of the network between nerve and muscle cells in turtles, researchers from the University of Copenhagen have gained new insight into the way in which movements are generated and maintained. In the long term, ...
Sep 19, 2019
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For migratory birds and sea turtles, the ability to sense the Earth's magnetic field is crucial to navigating the long-distance voyages these animals undertake during migration. Humans, however, are widely assumed not to ...
Jun 21, 2011
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The human brain can unconsciously respond to changes in Earth's magnetic fields, according to a team of geoscientists and neurobiologists.
Mar 18, 2019
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A study of an unusual snapping turtle with one lung found shared characteristics with humans born with one lung who survive beyond infancy. Digital 3D anatomical models created by Emma Schachner, PhD, Assistant Professor ...
Nov 21, 2017
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In humans, going just minutes without oxygen—such as during a heart attack or stroke—can cause devastating damage to the heart. Conversely, freshwater turtles hibernate for months at the bottom of frozen lakes and awake ...
Aug 29, 2017
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(HealthDay)—Kissing a turtle may be more than just yucky—sometimes it can literally be sickening.
Jun 15, 2016
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(HealthDay)—Although they've been banned as pets in the United States since 1975, small turtles are still causing salmonella infections, mostly in children, researchers report.
Dec 23, 2015
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Bisphenol A (BPA) is a chemical that is used in a variety of consumer products, such as food storage products and resins that line plastic food and beverage containers. Often, aquatic environments such as rivers and streams ...
Apr 15, 2015
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When you have a conflict with your spouse or significant other, do you withdraw like a turtle into its shell? Or perhaps you expect your partner to be a mind reader about what ticks you off?
Jan 7, 2015
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Add those cute little hedgehogs to the list of pets that can make you sick.
Jan 31, 2013
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Cryptodira Pleurodira and see text
Turtles are reptiles of the order Testudines (the crown group of the superorder Chelonia), characterised by a special bony or cartilaginous shell developed from their ribs that acts as a shield. "Turtle" may either refer to the Testudines as a whole, or to particular Testudines which make up a form taxon that is not monophyletic—see also sea turtle, terrapin, tortoise, and the discussion below.
The order Testudines includes both extant (living) and extinct species. The earliest known turtles date from 215 million years ago, making turtles one of the oldest reptile groups and a more ancient group than lizards and snakes. About 300 species are alive today, and some are highly endangered.
Like other reptiles, turtles are ectotherms—varying their internal temperature according to the ambient environment, commonly called cold-blooded. Like other amniotes (reptiles, dinosaurs, birds, and mammals), they breathe air and do not lay eggs underwater, although many species live in or around water. The largest turtles are aquatic.
This text uses material from Wikipedia, licensed under CC BY-SA
