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Where We Split From Sharks: Common Ancestor Comes Into Focus

June 13, 2012

a latex mold of Acanthodes bronni and a fish The common ancestor of all jawed vertebrates on Earth resembled a shark, according to a new analysis of the braincase of a 290-million-year-old fossil fish that has long puzzled paleontologists. Research on Acanthodes bronni, a Paleozoic fish, sheds light on the evolution of the earliest jawed vertebrates and offers a glimpse of the last common ancestor before the split between the earliest sharks and the first bony fishes--the lineage that would eventually include human beings. Full Story

University of Chicago Medical Center

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