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Latest Ichthyostega 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...

Ichthyostega_BW
2012-05-24 19:20:53

Lee Rannals for RedOrbit.com Scientists say that the 360-million-year-old animal that was first to have moved around on land did not do so using four legs. Images have shown that Ichthyostega walked on land similar to how a salamander walks around today, but 3D computer models have led scientists to disagree. According to a study published in the journal Nature, Ichthyostega would have actually transported from water using its front limbs as crutches. The animal lived during the...

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2010-05-18 07:23:07

Event of unknown origin occurred as first vertebrates tested land A mass extinction of fish 360 million years ago hit the reset button on Earth's life, setting the stage for modern vertebrate biodiversity. The mass extinction scrambled the species pool near the time at which the first vertebrates crawled from water towards land. Those few species that survived the bottleneck were the evolutionary starting point for all vertebrates--including humans--that exist today, according to results of a...

2009-04-20 14:10:00

The fossil record usually shows what adult animals looked like. But the appearance and lifestyle of juvenile animals often differ dramatically from those of the adults. A classic example is provided by frogs and salamanders. New discoveries from Uppsala, Cambridge and Duke Universities, published in Science, show that some of the earliest backboned land animals also underwent such changes of lifestyle as they grew up. Professor Per Ahlberg at the Department of Physiology and Developmental...

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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...

2008-06-26 09:00:00

Scientists believe the discovery of well-preserved fossils in Latvia may explain the evolutionary history of how our ancestors moved from water to land.  Swedish researchers have reconstructed parts of the animal, which had a fish-like body but a head that appears better suited to land than water. The four-legged fish, known as Ventastega curonica, would have looked similar to a small alligator, the scientists say, and may in part explain the process of evolution. Researchers Per...

2005-08-31 13:45:00

LONDON (Reuters) - The first four-limbed animals on land may not have hopped or waddled but rather shuffled like modern-day caterpillars, according to new research published in the science journal Nature. Scientists from Uppsala University in Sweden and McGill University in Canada came to these conclusions after studying the fossils of the Ichthyostega -- a four-legged fish that lived around 360 million years ago. They noted that the construction of the creature's backbone ruled out wriggling...

2005-08-31 12:00:00

LONDON -- The first four-limbed animals on land may not have hopped or waddled but rather shuffled like modern-day caterpillars, according to new research published in the science journal Nature. Scientists from Uppsala University in Sweden and McGill University in Canada came to these conclusions after studying the fossils of the Ichthyostega -- a four-legged fish that lived around 360 million years ago. They noted that the construction of the creature's backbone ruled out wriggling in a...


Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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