Using 3D imaging, a study led by Conner Bennett uncovered track fossils in Oregon’s John Day Fossil Beds, revealing the behaviors of prehistoric birds and lizards. These trace fossils, dating back to the Eocene Epoch, provide evidence of birds foraging in shallow waters and small lizards darting along a lakeshore, filling gaps in the fossil record where body fossils are absent. The analysis of these tracks also includes prints from more recent mammals, such as a three-toed ungulate and a saber-toothed cat, suggesting retractable claws similar to modern cats. The research highlights the potential of trace fossils to offer insights into ancient ecosystems, encouraging further exploration of overlooked fossil collections. Bennett's work, inspired by previously unstudied track impressions, underscores the importance of integrating new technologies in paleontological research to reconstruct past environments.

Conner Bennett's study utilized 3D imaging to analyze fossilized tracks at John Day Fossil Beds, revealing behaviors of prehistoric birds and lizards from the Eocene Epoch.

The trace fossils indicate that a small bird foraged for worms near a lakeshore, and a small lizard left tracks that show its movement along the same lakeshore, suggesting their presence despite the lack of body fossils.

The study also identified traces from a later period, including a three-toed ungulate and a saber-toothed cat, with the latter's tracks indicating retractable claws typical of modern felines.

Bennett's research encourages paleontologists to revisit overlooked fossil collections, demonstrating how trace fossils can provide crucial insights into prehistoric life.

The findings emphasize the significance of trace fossils in reconstructing ancient ecosystems, as they fill gaps left by the absence of more commonly studied bones and physical remains.