The Jelm Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Triassic period.

• List of fossiliferous stratigraphic units in Wyoming
• Paleontology in Wyoming

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 8 July 2014.