Showing 20 articles starting at article 741
Categories: Paleontology: Fossils, Physics: Quantum Physics
Published Solid salamander: Prehistoric amphibian was as heavy as a pygmy hippo
(via sciencedaily.com) Scientists have calculated the body mass of two ancient amphibians.
Published Rapid fluctuations in oxygen levels coincided with Earth's first mass extinction
(via sciencedaily.com) Rapid changes in marine oxygen levels may have played a significant role in driving Earth's first mass extinction, according to a new study.
Published Ray-finned fish survived mass extinction event
(via sciencedaily.com) Ray-finned fish, now the most diverse group of backboned animals, were not as hard hit by a mass extinction event 360 million years ago as scientists previously thought.
Published Tiniest ever ancient seawater pockets revealed
(via sciencedaily.com) Ancient seawater pockets offer a new source of clues to climate change in vanished oceans and our own.
Published Earth can regulate its own temperature over millennia, new study finds
(via sciencedaily.com) A new study confirms that the planet harbors a 'stabilizing feedback' mechanism that acts over hundreds of thousands of years to keep global temperatures within a steady, habitable range.
Published Footprints claimed as evidence of ice age humans in North America need better dating, new research shows
(via sciencedaily.com) The preserved footprints found in New Mexico's Lake Otero Basin would upend scientific understanding of how, and when, humans first arrived in North America, if they are accurately dated. A new study brings the age claim into question.
Published Welsh 'weird wonder' fossils add piece to puzzle of arthropod evolution
(via sciencedaily.com) Original source International team of researchers describe new fossil species discovered in fossil deposit near Llandrindod Wells in mid-Wales. The fossil, Mierridduryn bonniae, shares many features with Cambrian 'weird wonder' Opabinia, but is 40 million years younger. Robust phylogenetic analyses suggest that Mierridduryn is either the third opabiniid ever discovered, or is a distinct group that is key for understanding the evolution of the arthropod head.