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Latest Jennifer A. Clack Stories

Study Reveals First Ever Images Of Early Tetrapod Backbone And How It Helped In Land Evolution
2013-01-14 08:07:38

[Watch Video: 3D X-Ray Images Of Early Tetrapod Backbone] Lawrence LeBlond for redOrbit.com - Your Universe Online Using high-energy X-rays and a new data extraction protocol, an international consortium of scientists have for the first time rendered a 3D model of a prehistoric tetrapod backbone. The new reconstruction has shed new light on how the early animals moved once they made it onto land. One of the main creatures studied was a fierce-looking ichthyostega that lived from 374...

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2009-07-07 06:45:00

Nearly everyone can recall the high school textbook illustrations of the planet's first land-dwelling creatures, ubiquitously represented as comic-looking fish with short, stumpy legs.  A team of paleontologists, however, are challenging these standard depictions, saying that the earth's first tetrapods were for more diverse than previously suspected. "Some looked like crocodiles, some looked like little lizards, some like moray eels, and some were snake-like," explained Jennifer Clack...

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2009-04-18 14:00:00

New research from Duke University suggests a reversal in the order in which two four-limbed creatures transitioned from water to land.The Ichthyostega and Acanthostega, lived some 360-370 million years ago in modern-day Greenland.Scientists had previously considered Acanthostega to be the first vertebrate animal to possess limbs with digits rather than fish fins, but Viviane Callier, a Duke University graduate student, found fossilized evidence to suggest that Acanthostega may have had a...


Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
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