Day #11 Deskcrop: Belemnites

Fossilized bullets? Cigarette butts? Nope… belemnites.

In this case they’re Jurassic (~150 Ma) from the base of the Redwater member of the Stump Formation in the Red Wash area of Dinosaur National Monument, Utah.

IMG_7282
Belemnites

And that’s about the sum total of my knowledge of these critters. If an enterprising paleontologist wants to elaborate they are invited to do so in the comments. :-)