News tagged with mass extinction event

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Fossil magnetism helps prove mass extinction theory

May 04, 2009 | 4.7 / 5 (12) | 0

(PhysOrg.com) -- Were major extinction events real biological catastrophes or were they merely the result of gaps in the fossil record? Research by a team of geologists from the Universities of Bristol, Plymouth, ...

Dinosaurs declined before mass extinction

Other Sciences / Archaeology & Fossils

Apr 30, 2009 | 4.1 / 5 (14) | 5

Dinosaurs were dying out much earlier than the mass extinction event 65 million years ago, Natural History Museum scientists report in the Proceedings of the Royal Society journal today.

New Blow for Dinosaur-Killing Asteroid Theory

Space & Earth / Earth Sciences

Apr 27, 2009 | 4.4 / 5 (28) | 14

(PhysOrg.com) -- The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, is challenged in a paper ...

Search results for mass extinction event

Geologic Findings Undermine Theories of Permian Mass Extinction Timing

Space & Earth / Earth Sciences

Mar 02, 2009 | 4 / 5 (19) | 3

(PhysOrg.com) -- New scientific findings by geologist Robert Gastaldo of Colby College in Waterville, Maine, and colleagues call into question popular theories about the largest mass extinction in Earth's ...

Ancient volcano may have caused mass extinction

Space & Earth / Earth Sciences

May 28, 2009 | 4.3 / 5 (18) | 0

A previously unknown giant volcanic eruption that led to global mass extinction 260million years ago has been uncovered by scientists at the University of Leeds.

The flash recovery of ammonoids after the most massive extinction of all time

Other Sciences / Archaeology & Fossils

Sep 02, 2009 | 3.2 / 5 (5) | 0

After the End-Permian extinction 252.6 million years ago, ammonoids diversified and recovered 10 to 30 times faster than previous estimates.

Fossil record supports evidence of impending mass extinction

Other Sciences / Archaeology & Fossils

Oct 24, 2007 | 3.9 / 5 (57) | 9

Global temperatures predicted for the coming centuries may trigger a new ‘mass extinction event’, where over 50 per cent of animal and plant species would be wiped out, warn scientists at the Universities of York and Leeds.

Reptiles stood upright after mass extinction

Other Sciences / Archaeology & Fossils

Sep 15, 2009 | 4 / 5 (8) | 1

(PhysOrg.com) -- Reptiles changed their walking posture from sprawling to upright immediately after the end-Permian mass extinction, the biggest crisis in the history of life that occurred some 250 million ...

Volcanic eruptions wiped out ocean life 93 million years ago

Space & Earth / Earth Sciences

Jul 16, 2008 | 3.8 / 5 (38) | 8

University of Alberta scientists contend they have the answer to mass extinction of animals and plants 93 million years ago. The answer, research has uncovered, has been found at the bottom of the sea floor where lava fountains ...

Canada's shores saved animals from devastating climate change 252 million years ago

Space & Earth / Earth Sciences

Oct 01, 2008 | 4.5 / 5 (26) | 7

The shorelines of ancient Alberta, British Columbia and the Canadian Arctic were an important refuge for some of the world's earliest animals, most of which were wiped out by a mysterious global extinction event some 252 ...

Recovering from a mass extinction

Other Sciences / Archaeology & Fossils

Jan 18, 2008 | 4.3 / 5 (28) | 0

[B]The full recovery of ecological systems, following the most devastating extinction event of all time, took at least 30 million years, according to new research from the University of Bristol[/B] The ful ...

Surviving mass extinction by leading a double life

Biology / Ecology

Jul 14, 2009 | 5 / 5 (2) | 0

(PhysOrg.com) -- Drifting across the world's oceans are a group of unicellular marine microorganisms that are not only a crucial source of food for other marine life -- but their fossils, which are found in abundance, provide ...