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Ancient mother spawns new insight on reptile reproduction
Date:8/27/2008

>The eggs of Adocus are extremely thick and hard, whereas those of most modern turtles are either thinner or soft-shelled. The thick eggshell may have evolved to protect the eggs from desiccation in dry environments or to protect them from voracious predators during the time of the dinosaurs.

Zelenitsky says the pregnant turtle specimen and the nest shed light on the evolution of reproductive traits of modern turtles, specifically those traits related to their eggs and nests.

"Based on these fossils, we have determined that the ancestor of living hidden-necked turtles, which are most of today's turtles and tortoises, laid a large number of eggs and had hard, rigid shells," says Therrien.


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Contact: Leanne Yohemas
leanne.yohemas@ucalgary.ca
403-220-5144
University of Calgary
Source:Eurekalert

Page: 1 2

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