Could coral reefs become sponge reefs in the future?
Dinosaur predecessors gain ground in wake of world's biggest biodiversity crisis
Many scientists have thought that dinosaur predecessors missed the race to fill habitats emptied when nine out of 10 species disappeared during the Earth's largest mass extinction, approximately 252 million ...
Apr 29, 2013
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Cheetahs in race to survive
Deep-sea vent animals not as isolated as they seem
(Phys.org) —Miles below the ocean surface, diverse ecosystems flourish at hydrothermal vents. Without sunlight, animals live off of bacteria that thrive on chemicals billowing out of the Earth's crust. ...
Apr 01, 2013
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Study shows extinction of pseudosuchians may have helped dinosaurs flourish
(Phys.org) —A pair of researchers from Germany's Ludwig-Maximilians-Universität have published a paper in the journal Biology Letters, suggesting that the mass extinction of pseudosuchians approximately 201 mi ...
Mar 28, 2013
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Global fires after the asteroid impact probably caused the K-Pg extinction
About 66 million years ago a mountain-sized asteroid hit what is now the Yucatan in Mexico at exactly the time of the Cretaceous-Paleogene (K-Pg) mass extinction. Evidence for the asteroid impact comes from sediments in the ...
Mar 26, 2013
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Another link between CO2 and mass extinctions of species
(Phys.org) —It's has been know that massive increases in emission of CO2 from volcanoes, associated with the opening of the Atlantic Ocean in the end-Triassic Period, set off a shift in state of the climate ...
Mar 22, 2013
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Fossil bird study on extinction patterns could help today's conservation efforts
(Phys.org) —A new University of Florida study of nearly 5,000 Haiti bird fossils shows contrary to a commonly held theory, human arrival 6,000 years ago didn't cause the island's birds to die simultaneously.
Mar 21, 2013
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Large solar proton event explains 774-775 CE carbon-14 increase
Tree ring records indicate that in 774-775 CE, atmospheric carbon-14 levels increased substantially. Researchers suggest that a solar proton event may have been the cause. In solar proton events, large numbers of high-energy ...
Mar 15, 2013
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Russian asteroid explosion and past impactors paint a potentially grim future for Earth
The recent meteor explosion over Chelyabinsk brought to the forefront a topic that has worried astronomers for years, namely that an impactor from space could cause widespread human fatalities. Indeed, the ...
Mar 08, 2013
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Internal structure of bones reveals loading and walking behavior
New research highlights influence of intraspecific variability on biodiversity studies
(Phys.org)—A study of around 100 newly collected specimens of early ammonoids (marine invertebrates with distinctive coiled shells) suggests that the number of species they belong to might have been over-estimated ...
Jan 18, 2013
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Ups and downs of biodiversity after mass extinction
The climate after the largest mass extinction so far 252 million years ago was cool, later very warm and then cool again. Thanks to the cooler temperatures, the diversity of marine fauna ballooned, as paleontologists ...
Dec 21, 2012
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Mass extinction study provides lessons for modern world
Oldest primate lived in trees after the extinction of dinosaurs
(Phys.org)—The Cretaceous-age Hell Creek Formation of Montana is best known for the discovery over a century ago of Tyrannosaurus rex. It also has produced some of the best fossils from the end of the Age of the Dinosaurs ...
Oct 23, 2012
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