2" Cretaceous Coprolite (Poop) With Seed? - Judith River Formation

This is a highly unusual fossil from the Late Cretaceous, Judith River Formation of Montana. It appears to be a coprolite (fossil poop) with some type of seed preserved inside if it and visible on the broken end. The entire coprolite is 2" long, and we can only guess at what might have produced it. The Judith River Formation represents an environment near the shoreline so you can get a mix of terrestrial fossils like dinosaurs along with fish, reptile and amphibian fossils.

The Judith River Formation is one of the most prolific sources of Late Cretaceous vertebrate fossils. At least sixteen Orders containing more than forty Genera are known from the formation. These include fish, amphibians, mammals, and insects in addition to the reptiles, avian and non-avian dinosaurs (birds). Among the more interesting specimens is Leonardo, a mummified and fossilized Brachylophosaurus. This is a Hadrosaur, a duck-billed dinosaur with amazing preservation of the soft tissues of the body. The pattern in the skin of the feet is even preserved. In addition to Leonardo, the Judith River Formation contained the remains of the theropod Hesperornis, the only known freshwater Hespernorthid, a penguin like bird.

Hill County, Montana
Judith River Formation
2" long
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