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Latest Randall Irmis Stories

King Of Gore: Super Predator Cousin Of T. Rex Found In Utah
2013-11-07 14:47:55

Alan McStravick for redOrbit.com - Your Universe Online You may have noticed your local paleontologist has had an extra bounce in his step this week. That might have something to do with a monumental find of a new super-predator dinosaur in the Wahweap Formation within the Grand Staircase-Escalante National Monument in south-central Utah. Known as Lythronax argestes, this super predator lived 80 million years ago and is a distant, older cousin to the larger Tyrannosaurus rex. Measuring...

Image 1 - Land Animals Suffered Catastrophic Losses After Permian Period
2011-10-26 06:31:51

The cataclysmic events that marked the end of the Permian Period some 252 million years ago were a watershed moment in the history of life on Earth. As much as 90 percent of ocean organisms were extinguished, ushering in a new order of marine species, some of which we still see today. But while land dwellers certainly sustained major losses, the extent of extinction and the reshuffling afterward were less clear. In a paper published in the journal Proceedings of the Royal Society B,...

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2009-12-10 15:55:00

A team of paleontologists has unearthed a previously unknown meat-eating dinosaur from a fossil bone bed in northern New Mexico. The discovery settles a long-standing debate about early dinosaur evolution, and reveals a period of explosive diversification.  It also hints at how dinosaurs spread across the supercontinent Pangaea. A description of the new species, named Tawa after the Hopi word for the Puebloan sun god, appears in the Dec. 10 issue of the journal Science. The...

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2005-06-27 16:40:00

The fossilized skeleton of a small crocodile relative excavated last year at Petrified Forest National Park in Arizona throws a wrench into theories of how and where the dinosaurs arose more than 210 million years ago at the end of the Triassic Period. This suggests that the herbivorous ornithischians and the meat-eating theropods, like Tyrannosaurus rex, did not evolve together in the Late Triassic as many paleontologists thought. Astrobiology Magazine -- The fossilized skeleton of a small...

2005-06-23 19:50:00

Berkeley - The fossilized skeleton of a small crocodile relative excavated last year at Petrified Forest National Park in Arizona throws a wrench into theories of how and where the dinosaurs arose more than 210 million years ago at the end of the Triassic Period. The animal, one of many creatures from the Late Triassic known only from their teeth, was thought to be an ancestor of the plant-eating ornithischian dinosaurs like Stegosaurus and Triceratops, which roamed the world millions of...