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Found: A 5.5-Million-Year-Old Ancestor of the Red-Eared Slider

Penn student Steven Jasinski found the remains of Trachemys haugrudi, an ancestor of the red-eared slider turtle, suggesting a “once greater diversity” of turtles than today.

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Inside Science

Biodiversity in the Oceans Exploded After Dinosaurs Fell

Lauren Sallan of the School of Arts and Sciences offered commentary on the diversification of marine life in the period following the end-Cretaceous mass extinction.

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