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Contact: John Easton
john.easton@uchospitals.edu
773-702-6241
University of Chicago Medical Center
Caption: A new study of Tiktaalik roseae (middle), a 375-million-year-old transitional fossil, highlights an intermediate step between the condition in fish like Eusthenopteron (bottom) and that in early limbed forms like Acanthostega (top). The new data are described in a paper by Jason Downs, Ted Daeschler and Neil Shubin in the Oct. 16 edition of Nature.
Credit: Kalliopi Monoyios
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