News articles tagged with 'diversification'
'Fly tree of life' mapped, adds big branch of evolutionary knowledge
— 15 Mar 2011 20:56 | BiologyCalling it the 'new periodic table for flies,' researchers at North Carolina State University and collaborators across the globe have mapped the evolutionary history of flies, providing…
New findings show how bacteria undergo genome evolution
— 28 Jan 2011 17:15 | BiologyScientists at the Institut Pasteur and the University of Maryland have revealed how bacterial and archaea microbes successfully evolve their gene repertoires to face new challenges,…
Research shows that environmental factors limit species diversity
— 3 Jan 2011 15:47 | BiologyIt's long been accepted by biologists that environmental factors cause the diversity - or number - of species to increase before eventually levelling off. Some recent work, however,…
Into Africa? Fossils suggest earliest anthropoids colonised Africa
— 28 Oct 2010 14:18 | Geology and palaeontologyToday in the journal Nature, a new discovery described by a team of international scientists, including Carnegie Museum of Natural History palaeontologist Christopher Beard, suggests…
Penn biologists say species accumulate on Earth at slower rates than in the past
— 30 Sep 2010 13:20 | BiologyComputational biologists at the University of Pennsylvania say that species are still accumulating on Earth but at a slower rate than in the past…
UCLA biologists report how whales have changed over 35 million years
— 29 May 2010 14:30 | Geology and palaeontologyWhales are remarkably diverse, with 84 living species of dramatically different sizes and more than 400 other species that have gone extinct, including some that lived partly on land.…
New fossil amphibian provides earliest widespread evidence of terrestrial invertebrates
— 16 Mar 2010 08:31 | Geology and palaeontologyA team of researchers from Carnegie Museum of Natural History has described a new genus and species of carnivorous amphibian from western Pennsylvania. The fossil skull, found in 2004…
Ferns took to the trees and thrived
— 2 Jul 2009 16:01 | BiologyAs 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…
Work of Field Museum scientist addresses question of chance in evolution
— 10 Jun 2009 06:16 | BiologyAs Darwin observed, natural selection leading to adaptation of individuals and populations is occurring gradually and all the time. But over very long spans of time, the major channels…
Rapid burst of flowering plants set stage for other species
— 11 Feb 2009 08:40 | EnvironmentA 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,…