But that’s simply not true,” said Daniel Rabosky, assistant professor in the U-M Department of Ecology and Evolutionary Biology and a curator of herpetology at the Museum of Zoology.Ī spotted gar from the Great Lakes. “Sturgeon are thought of as a living fossil group that has undergone relatively slow rates of anatomical change over time. Photo courtesy of Michigan Sea Grant.ANN ARBOR-Efforts to restore sturgeon in the Great Lakes region have received a lot of attention in recent years, and many of the news stories note that the prehistoric-looking fish are “living fossils” virtually unchanged for millions of years.īut a new study by University of Michigan researchers and their colleagues reveals that in at least one measure of evolutionary change-changes in body size over time-sturgeon have been one of the fastest-evolving fish on the planet.
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