News tagged with kt extinction
Experts reaffirm asteroid impact caused mass extinction 65 million years ago (w/ Video)
(PhysOrg.com) -- Responding to challenges to the hypothesis that an asteroid impact caused a mass extinction on Earth 65 million years, a panel of 41 scientists re-analyzed data and provided new evidence, ...
Space & Earth / Earth Sciences
Mar 04, 2010 |
4.4 / 5 (20) |
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Probing Question: Why did mammals survive the 'K/T extinction'?
Picture a dinosaur. Huge, menacing creatures, they ruled the Earth for nearly 200 million years, striking fear with every ground-shaking stride. Yet these great beasts were no match for a 6-mile wide meteor ...
Jan 28, 2010 |
4.5 / 5 (4) |
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Search results for kt extinction
Massive volcanoes, meteorite impacts delivered one-two death punch to dinosaurs: study
(PhysOrg.com) -- A cosmic one-two punch of colossal volcanic eruptions and meteorite strikes likely caused the mass-extinction event at the end of the Cretaceous period that is famous for killing the dinosaurs ...
Space & Earth / Earth Sciences
Nov 17, 2011 |
5 / 5 (10) |
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Test shows dinosaurs survived mass extinction by 700,000 years
University of Alberta researchers determined that a fossilized dinosaur bone found in New Mexico confounds the long established paradigm that the age of dinosaurs ended between 65.5 and 66 million years ago.
Other Sciences / Archaeology & Fossils
Jan 27, 2011 |
4.3 / 5 (16) |
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After dinosaurs, mammals rise but their genomes get smaller
(PhysOrg.com) -- Evidence buried in the chromosomes of animals and plants strongly suggests only one group -- mammals -- have seen their genomes shrink after the dinosaurs' extinction. What's more, that trend continues today, ...
Jul 27, 2009 |
4.5 / 5 (2) |
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Ancient marine invertebrate diversity less explosive than thought
Diversity among the ancestors of such marine creatures as clams, sand dollars and lobsters showed only a modest rise beginning 144 million years ago with no clear trend afterwards, according to an international ...
Biology /
Jul 03, 2008 |
4.6 / 5 (5) |
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Seismic images show dinosaur-killing meteor made bigger splash
The most detailed three-dimensional seismic images yet of the Chicxulub crater, a mostly submerged and buried impact crater on the Mexico coast, may modify a theory explaining the extinction of 70 percent of life on Earth ...
Space & Earth / Earth Sciences
Jan 23, 2008 |
4.4 / 5 (36) |
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