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The life histories of the earliest land animals
Date:4/20/2009

at it becomes possible for the animal to "lock" its forelimb into a weight-bearing position.

Acanthostega has feebler limbs and a large tail fin, and seems to have been more aquatic. In this animal, there are no corresponding changes.

"The explanation is probably that both animals laid their eggs in water just like modern amphibians, which meant that the terrestrial Ichthyostega, but not the aquatic Acanthostega, needed to undergo a lifestyle transformation as it grew from larva to adult," says Per Ahlberg.


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Contact: Per Ahlberg
Per.Ahlberg@ebc.uu.se
46-018-471-2641
Uppsala University
Source:Eurekalert

Page: 1 2

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