Fossil of Tullimonstrum gregarium from the Chicago Field Museum, studied in 2015 under x-ray at Argonne National Laboratory.
U.S. Department of Energy
This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.
3,000 × 1,997 pixels
U.S. Department of Energy, “Tullimonstrum gregarium,” SCRC Virtual Museum at Southern Illinois University's Morris Library, accessed July 5, 2022, https://scrcexhibits.omeka.net/items/show/777.