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'Steak-knife' teeth reveal ecology of oldest land predators
Date:2/7/2014

t time but now with this type of research we are starting to piece together how the members of these communities interacted."

Brink and Reisz studied the changes in Dimetrodon teeth across 25 million years of evolution.

The analysis indicated the changes in tooth structure occurred in the absence of any significant evolution in skull morphology. This, Brink and Reisz suggest, indicates a change in feeding style and trophic interactions.

"The steak knife configuration of these teeth and the architecture of the skull suggest Dimetrodon was able to grab and rip and dismember large prey," Reisz said.

"Teeth fossils have attracted a lot of attention in dinosaurs but much less is known about the animals that lived during this first chapter in terrestrial evolution."


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Contact: Gareth Trickey
gareth.trickey@utoronto.ca
905-828-3983
University of Toronto
Source:Eurekalert  

Page: 1 2

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