News tagged with tetrapod
Fossils suggest earlier land-water transition of tetrapod
Other Sciences / Archaeology & Fossils
Apr 17, 2009 |
4.6 / 5 (9) |
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New evidence gleaned from CT scans of fossils locked inside rocks may flip the order in which two kinds of four-limbed animals with backbones were known to have moved from fish to landlubber.
Search results for tetrapod
Reptiles stood upright after mass extinction
Other Sciences / Archaeology & Fossils
Sep 15, 2009 |
4 / 5 (8) |
1
(PhysOrg.com) -- Reptiles changed their walking posture from sprawling to upright immediately after the end-Permian mass extinction, the biggest crisis in the history of life that occurred some 250 million ...
Ancient fossils shed light on anatomical changes accompanying evolution of first land vertebrates
Other Sciences / Archaeology & Fossils
Jul 06, 2009 |
4.9 / 5 (8) |
1
Cartoon depictions of the first animals to emerge from the ocean and walk on land often show a simple fish with feet, venturing from water to land. But according to Jennifer Clack, a paleontologist at the ...
Primordial fish had rudimentary fingers
Biology /
Sep 22, 2008 |
4.5 / 5 (16) |
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Tetrapods, the first four-legged land animals, are regarded as the first organisms that had fingers and toes. Now researchers at Uppsala University can show that this is wrong. Using medical x-rays, they found rudiments ...
Exotic Chameleon Spends Most of its Life as an Egg
Biology /
Jul 11, 2008 |
4.8 / 5 (27) |
3
(PhysOrg.com) -- Scientists have discovered a chameleon species that spends a good two-thirds of its life inside an egg: Furcifer labordi lives about 8-9 months as an embryo, and has a post-hatching lifesp ...
Huge genome-scale phylogenetic study of birds rewrites evolutionary tree-of-life
Jun 26, 2008 |
4.8 / 5 (8) |
0
The largest ever study of bird genetics has not only shaken up but completely redrawn the avian evolutionary tree. The study challenges current classifications, alters our understanding of avian evolution, and provides a ...
Scientists find 245 million-year-old burrows of land vertebrates in Antarctica
Other Sciences / Archaeology & Fossils
Jun 08, 2008 |
4 / 5 (25) |
2
For the first time paleontologists have found fossilized burrows of tetrapods – any land vertebrates with four legs or leglike appendages – in Antarctica dating from the Early Triassic epoch, about 245 million ...
Debut of TEAM 0.5, the World's Best Microscope
Jan 22, 2008 |
4.7 / 5 (53) |
3
TEAM 0.5, the world's most powerful transmission electron microscope — capable of producing images with half‑angstrom resolution (half a ten-billionth of a meter), less than the diameter of a single ...
Coelacanth fossil sheds light on fin-to-limb evolution
Biology /
Aug 01, 2007 |
4.2 / 5 (23) |
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A 400 million-year-old fossil of a coelacanth fin, the first finding of its kind, fills a shrinking evolutionary gap between fins and limbs. University of Chicago scientists describe the finding in a paper ...
New genetic data overturn long-held theory of limb development
Biology /
May 23, 2007 |
4.4 / 5 (13) |
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Long before animals with limbs (tetrapods) came onto the scene about 365 million years ago, fish already possessed the genes associated with helping to grow hands and feet (autopods) report University of Chicago researchers ...
Quantum dot recipe may lead to cheaper solar panels
Nanotechnology / Nanomaterials
May 02, 2007 |
4.7 / 5 (45) |
0
Rice University scientists today revealed a breakthrough method for producing molecular specks of semiconductors called quantum dots, a discovery that could clear the way for better, cheaper solar energy panels.
List of search results for tetrapod
