Reposted by Deep Time Detour at Dinosaur Ridge
For #FossilFriday, an ichnological 2-for-1 on a bedding-plane surface of the mid-Cretaceous (~100 mya) Dakota Formation sandstone at @dinoridge.bsky.social west of Denver, CO, with tops of many U-shaped burrows (probably Diplocraterion) & 2 three-toed dinosaur tracks (arrows). 🧪🪨🦖🦕🐾