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ScienceDaily: Fossils & Ruins News |
| 18.5 million year old vine fossil identified as new species Posted: 07 May 2021 08:20 AM PDT An 18.5 million-year-old fossil found in Panama provides evidence of a new species and is the oldest reliable example of a climbing woody vine known as a liana from the soapberry family. The discovery sheds light on the evolution of climbing plants. |
| Engineers and biologists join forces to reveal how seals evolved to swim Posted: 06 May 2021 11:20 AM PDT Seals and sea lions are fast swimming ocean predators that use their flippers to literally fly through the water. But not all seals are the same: some swim with their front flippers while others propel themselves with their back feet. |
| Independent evolutionary origins of vertebrate dentitions Posted: 06 May 2021 09:58 AM PDT The origins of a pretty smile have long been sought in the fearsome jaws of living sharks which have been considered living fossils reflecting the ancestral condition for vertebrate tooth development and inference of its evolution. However, this view ignores real fossils which more accurately reflect the nature of ancient ancestors. |
| The origin of reproductive organs Posted: 06 May 2021 09:57 AM PDT Early in fetal development, a mass of cells known as the bipotential gonad has the possibility of giving rise either to ovaries or testes, reproductive organs that contribute to many of the characteristics that define a person's sex. In a new study, researchers pinpoint the origins of that precursor gland. |
| New indicator for oxygen levels in early oceans developed Posted: 06 May 2021 07:53 AM PDT A geoscientific research team led by scientists from the University of Cologne has come a decisive step closer to determining the oxygen levels in the early Earth's history by analyzing the composition of tungsten isotopes. |
| Ice core chemistry study expands insight into sea ice variability in Southern Hemisphere Posted: 05 May 2021 02:49 PM PDT Sea ice cover in the Southern Hemisphere is extremely variable, from summer to winter and from millennium to millennium, according to a new study. Overall, sea ice has been on the rise for about 10,000 years, but with some exceptions to this trend. Researchers uncovered these findings by examining the chemistry of a 54,000-year-old South Pole ice core. |
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