Tag Archives: Before
Ancient rocks hold evidence for life before oxygen
Somewhere between Earth’s creation and where we are today, scientists have demonstrated that some early life forms existed just fine without any oxygen. The 2.52 billion-year-old sulfur-oxidizing bacteria are exceptionally large, spherical-shaped, smooth-walled microscopic structures much larger than most modern … Continue reading
Tagged Ancient, Before, evidence, Rocks
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Before animals, evolution waited eons to inhale
A couple of times in four billion years, evolution has slowed to a crawl. And an eon or so has passed before more complex life forms, such as simple animals, could arise. read more (e) Science News – Paleontology & … Continue reading
Before animals, evolution waited eons to inhale
Time to smash the beaker when thinking about oxygen concentrations in water, at the time when animal life first evolved. Oceans stacked oxygen here and depleted it there, as a new novel model demonstrates. It may well toss a wrench … Continue reading
For ancient deep-sea plankton, a long decline before extinction
A new study of nearly 22,000 fossils finds that ancient plankton communities began changing in important ways as much as 400,000 years before massive die-offs ensued during the first of Earth’s five great extinctions. The research suggests that the effects … Continue reading
For ancient deep-sea plankton, a long decline before extinction
A new study of nearly 22,000 fossils finds that ancient plankton communities began changing in important ways as much as 400,000 years before massive die-offs ensued during the first of Earth’s five great extinctions. read more (e) Science News – … Continue reading
Volcanoes get quiet before they erupt
volcanic bombs When dormant volcanoes are about to erupt, they show some predictive characteristics–seismic activity beneath the volcano starts to increase, gas escapes through the vent, or the surrounding ground starts to deform. However, until now, there has not been … Continue reading
Mammals began their takeover long before the death of the dinosaurs
New research reports that, contrary to popular belief, mammals began their massive diversification 10 to 20 million years before the extinction of the dinosaurs. Paleontology News — ScienceDaily
Dinosaurs ‘already in decline’ before asteroid apocalypse
New research suggests that other factors, such as the break-up of continental land masses, sustained volcanic activity and other ecological factors, may possibly have influenced the gradual decline of dinosaurs. The long-necked giant sauropod dinosaurs were in the fastest decline, … Continue reading
Dinosaurs ‘already in decline’ before asteroid apocalypse
Dinosaurs were already in an evolutionary decline tens of millions of years before the meteorite impact that finally finished them off, new research has found. read more (e) Science News – Paleontology & Archaeology
Dinosaurs ‘already in decline’ before asteroid apocalypse
Dinosaurs were already in an evolutionary decline tens of millions of years before the meteorite impact that finally finished them off, new research has found. Paleontology News — ScienceDaily