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Oldest Australian crayfish fossils provide missing evolutionary link
Date:2/6/2008

cannot survive in saltwater, could have spread to so many continents, according to Martin. Such studies helped lay the groundwork for plate tectonics, which revolutionized the earth sciences in the 1960s through the theory that the continents were once connected. More recently, molecular biologists have theorized that all Southern Hemisphere crayfish originated in southeastern Australia.

"The evolution of Southern Hemisphere crayfish has challenged researchers since the 1870s," Martin says. "Only now, 140 years later, are we starting to put together the physical evidence for this evolution through the discovery of fossils."


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Contact: Beverly Cox Clark
beverly.clark@emory.edu
404-712-8780
Emory University
Source:Eurekalert

Page: 1 2

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