News tagged with evolutionary diversification
Big-brained animals evolve faster
Biology /
Aug 15, 2008 |
4.4 / 5 (20) |
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Ever since Darwin, evolutionary biologists have wondered why some lineages have diversified more than others. A classical explanation is that a higher rate of diversification reflects increased ecological ...
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Rapid burst of flowering plants set stage for other species
Other Sciences / Archaeology & Fossils
Feb 09, 2009 |
4.8 / 5 (5) |
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A new University of Florida study based on DNA analysis from living flowering plants shows that the ancestors of most modern trees diversified extremely rapidly 90 million years ago, ultimately leading to the formation of ...
The beetle's dilemma
Biology /
Jun 26, 2007 |
4 / 5 (1) |
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Large jaws are efficient in crushing hard prey, whereas small jaws are functional in capturing elusive prey. Researchers have suggested that such trade-offs between “force” and “velocity” could cause evolutionary ...
Amazonian amphibian diversity traced to Andes
Mar 10, 2009 |
5 / 5 (3) |
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Colorful poison frogs in the Amazon owe their great diversity to ancestors that leapt into the region from the Andes Mountains several times during the last 10 million years, a new study from The University ...
Ferns took to the trees and thrived
Jul 02, 2009 |
4.8 / 5 (5) |
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(PhysOrg.com) -- As flowering plants like giant trees quickly rose to dominate plant communities during the Cretaceous period, the ferns that had preceded them hardly saw it as a disappointment.
Two studies on bee evolution reveal surprises
Biology /
Dec 09, 2006 |
4.1 / 5 (20) |
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The discovery of a 100-million-year old bee embedded in amber -- perhaps the oldest bee ever found -- "pushes the bee fossil record back about 35 million years," according to Bryan Danforth, Cornell associate professor of ...
'Great speciators' explained: It's intrinsic
Biology /
Jan 26, 2009 |
4.3 / 5 (3) |
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New molecular research shows that birds within the family Zosteropidae—named white eyes for the feathers that frame their eyes—form new species at a faster rate than any other known bird. Remarkably, unlike ...
Life's 6-legged survivors -- evolutionary study shows beetles are in it for the long run
Biology /
Dec 20, 2007 |
4.5 / 5 (13) |
1
Most modern-day groups of beetles have been around since the time of the dinosaurs and have been diversifying ever since, says new research out in Science today.
Earliest toothless bird found
Other Sciences / Archaeology & Fossils
Dec 10, 2009 |
4.8 / 5 (5) |
0
(PhysOrg.com) -- A new species of bird from the Cretaceous period in China has been identified. It had toothless upper and lower jaws, and provides significant information on the diversification in the evolution ...
No need to thank dinosaur-killing asteroid for mammalian success
Biology /
Mar 28, 2007 |
4 / 5 (23) |
0
It is a natural history tale that every third grader knows: The dinosaurs ruled the Earth for hundreds of millions of years, until an asteroid struck the Yucatan Peninsula and triggered a mass extinction that allowed the ...
Genome duplication responsible for more plant species than previously thought
Aug 12, 2009 |
not rated yet |
2
Extra genomes appear, on average, to offer no benefit or disadvantage to plants, but still play a key role in the origin of new species, say scientists from Indiana University Bloomington and three other institutions ...
List of search results for evolutionary diversification
