Species: unknown
Collected from the Hermit Shale in Grand Canyon National Park by Frank Richardson in 1938.
This fossil is in the collections at Grand Canyon National Park, Arizona. Learn about paleontology in the National Park Service: https://www.nps.gov/subjects/fossils/index.htm
Learn more about Grand Canyon National Park’s Centennial: https://www.nps.gov/grca/getinvolved/centennial.htm