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ScienceDaily: Fossils & Ruins News |
Environmental oxygen triggers loss of webbed digits Posted: 13 Jun 2019 11:35 AM PDT Free fingers have many obvious advantages on land, such as in locomotion and grasping, while webbed fingers are typical of aquatic or gliding animals. But both amphibians and amniotes -- which include mammals, reptiles, and birds -- can have webbed digits. Scientists now show that during embryo development, some animal species detect the presence of atmospheric oxygen, which triggers removal of interdigital webbing. |
New 'king' of fossils discovered in Australia Posted: 13 Jun 2019 06:51 AM PDT Fossils of a giant new species from the long-extinct group of sea creatures called trilobites have been found on Kangaroo Island, South Australia. |
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