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Latest Archosaur Stories

Lizard Breath Developed Earlier Than Previously Thought
2013-12-12 05:05:45

redOrbit Staff & Wire Reports - Your Universe Online The one-way airflow breathing technique used by monitor lizards may have originated about 20 million years earlier than previously believed, according to a new paper appearing in Wednesday’s edition of the journal Nature. According to researchers from the University of Utah and Harvard University, air flows primarily in a one-way loop through the monitor lizard’s lungs. This breathing technique is believed to have been used by...

Mass Extinction Made Space Dinosaur Forerunners
2013-04-30 09:47:00

April Flowers for redOrbit.com - Your Universe Online Approximately 252 million years ago, during the world´s largest mass extinction event, nine out of ten species vanished from the planet. Based on fossil records from sites in South Africa and southwest Russia, many scientists have long thought the predecessors of dinosaurs largely missed the race to fill habitat niches that were emptied during this event. However, according to an international team of scientists, it turns out...

When Evolving From T-Rex To Sparrow, Timing Is Critical
2012-05-28 08:31:30

Although a sparrow and a Tyrannosaurus Rex might appear to have nothing in common, evolutionary biologists see more that relates the two creatures than not.  A new study, led by Harvard scientists, has shown that modern birds are essentially living dinosaurs with skulls that are remarkably similar to those of their juvenile ancestors. Arkhat Abzhanov, Associate Professor of Organismic and Evolutionary Biology and Bhart-Anjan Bhullar, a PhD student in Abzhanov laboratory and the first...

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2011-05-20 12:37:24

A fossil unearthed in China in the 1970s of a creature that died about 247 million years ago, originally thought to be a distant relative of both birds and crocodiles, turns out to have come from the crocodile family tree after it had already split from the bird family tree, according to research led by a University of Washington paleontologist.The only known specimen of Xilousuchus sapingensis has been reexamined and is now classified as an archosaur. Archosaurs, characterized by skulls with...

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2011-04-15 05:55:00

A new study by researchers at University of California-Davis finds that velociraptors had night vision that helped them stalk their prey at night. The study reverses conventional wisdom that dinosaurs were active by day while early mammals scurried around at night, said Ryosuke Motani, professor of geology at UC Davis and co-author of the report. "It was a surprise, but it makes sense," he said. Plant-eating dinosaurs also had some limited night vision, likely to satisfy their round the clock...

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2010-01-15 10:45:12

Scientists have discovered that air flows in one direction as it loops through the lungs of alligators, just as it does in birds. The results, published in this week's issue of the journal Science, suggest that this breathing method may have helped dinosaurs' ancestors dominate Earth after the planet's worst mass extinction 251 million years ago. Before and until about 20 million years after the extinction--called "the Great Dying" or the Permian-Triassic extinction--mammal-like reptiles...

2006-01-25 13:45:00

By Maggie Fox, Health and Science Correspondent WASHINGTON (Reuters) - A toothless, two-legged crocodile ancestor that walked upright and had a beak instead of teeth was discovered in the basement of New York's American Museum of Natural History, according to a report published on Wednesday. The 210 million-year-old fossil had sat in storage at the museum for nearly 60 years and was found only by accident, the paleontologists said. The animal is interesting because it closely resembles a...