So far, most of the Late Cretaceous fossils I have shared with you for Fossil Friday have been from the Hell Creek Formation of Montana and were collected over a number of years by the late Harley Garbani. The Hell Creek dates to the very end of the age of dinosaurs, just before the mass extinction 66 million years ago.There are more Hell Creek fossils at WSC to share, but today I want to showcase another fossil from a somewhat older slice of the Late Cretaceous. Last month, I showed you some plant fossils from our field area in New Mexico. Today's fossil is the tibia of a plant-eating dinosaur, probably a young hadrosaur, one of the duck-billed dinosaurs. This bone was found by University of Arizona - Tucson paleontology undergrad Kara Kelley and is now being prepared at WSC by volunteer Joe Reavis.This bone was collected from the Menefee Formation of New Mexico, and is around 80 million years old. We are now preparing and studying this bone and many other fossils collected by the Western Science Center, our partners at the Zuni Dinosaur Institute of Geosciences in Springerville, AZ, and volunteers from the Southwest Paleontological Society. We had a very successful expedition to the Menefee Formation in May-June; you can read an account of it written by yours truly. And we'll undertake another round of field work in the Menefee in August!Post by Curator Dr. Andrew McDonald