The fossilized burrow found recently in Antarctica and dated to the Early Triassic epoch is thought to have belonged to tetrapods - land vertebrates with four legs or appendages resembling legs - and was created when a nearby river overflowed, filling it with fine sand that hardened later on. No remains of the animal... |
9 June 2008
02:49 GMT |
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Living underground is not that easy, requiring some special adaptations. Just look at the mole's humerus bones. "When seen in the lab, they are nothing like the long upper arm bones of any other mammal," said Samantha Hopkins, a paleontologist at the University of Oregon, investigating the evolution of burrowing... |
29 October 2007
06:31 GMT |
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1. Despite their name, prairie dogs are related to the ...squirrels! But unlike the squirrels, they have very short tails and spend most of their life underground. Their name suggests a resemblance between their calls and a dog's bark... There are 5 species of prairie dogs included in the genus Cynomys: Gunnison... |
13 September 2007
15:06 GMT |
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Dinosaurs have fascinated everybody since their discovery, but this was mainly due to their sheer size. In time, scientists discovered really interesting things about them: some were feathered, they were warm-blooded, they cared for their offspring, some had "hands", some flew...Now researchers have discovered a new ... |
21 March 2007
03:47 GMT |
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