Just over 200 million years ago, long before the demise of the dinosaurs, a cataclysm killed off a significant chunk of the planet's animal life. The leading theory implicates massive volcanic eruptions, triggered when the ...
Earth Sciences
Apr 15, 2016
5
98
Two hundred and fifty-two million years ago, a series of Siberian volcanoes erupted and sent the Earth into the greatest mass extinction of all time. As a result of this mass extinction, known as the Permo-Triassic Mass Extinction, ...
Archaeology
Apr 5, 2016
0
364
Periodic mass extinctions on Earth, as indicated in the global fossil record, could be linked to a suspected ninth planet, according to research published by a faculty member of the University of Arkansas Department of Mathematical ...
Astronomy
Mar 30, 2016
115
3992
Marine turtles experienced an evolutionary windfall thanks to a mass extinction of crocodyliforms around 145 million years ago, say researchers.
Archaeology
Mar 9, 2016
0
198
Imagine dolphins disappearing from the world's oceans as a result of prolonged climate change and slower evolution. As shocking and unlikely as such an event might be, it happened in the past to a group of marine animals: ...
Archaeology
Mar 9, 2016
0
80
(Phys.org)—Sometimes when a star collapses into a supernova, it releases an intense, narrow beam of gamma rays. Gamma-ray bursts often last just a few seconds, but during that time they can release as much energy as the ...
Long before the dinosaurs, hefty herbivores called pareiasaurs ruled the Earth. Now, for the first time, a detailed investigation of all Chinese specimens of these creatures – often described as the 'ugliest fossil reptiles' ...
Archaeology
Feb 19, 2016
0
721
Secondary sexual characteristics are features that appear at sexual maturity and distinguish the two sexes of a species. Studies of secondary sexual characteristics in a species are vital for fully understanding its behavior, ...
Archaeology
Feb 18, 2016
0
42
Stanford scientists have found that chronically low levels of oxygen throughout the oceans hampered the recovery of life after the Permian-Triassic extinction, the most catastrophic die-off in our planet's history. Also known ...
Earth Sciences
Feb 17, 2016
2
73
Mammals with large brains tend to be smarter but they also face a greater chance today of going extinct, according to a study published Wednesday.
Ecology
Feb 17, 2016
0
139
