the very first fossil to get in western colorado is the maxilla, the

the very first fossil to get in western colorado is the maxilla, the dominant tooth-bearing bone in the upper jaw. this would have been a allosaurus. this was discovered in the 1970's by lance erickson. skull we havehe is the lacrimal bone. and filledetely thin with structures. bones a mammal goal, the do not fuse. you typically find them in little pieces. the brain case. condyle.he occipital this is the foramen magnum. here is the top of the skull. you are looking at the sides of the brain case. it is a little squished, but brain cases are the jewels we look for. you can tell where the cranial nerves are exiting, the different portions of the brain that are large. the most common dinosaurs in the grand valley are apatosaurus and of the mostone common predators in the jurassic. oodles of their teeth. they have serrations on both sides. think of a double steak knife going through your porterhouse like butter. they are compressed along the outside edges of the skull, fatter at the front. we will occasionally find them with the roots. most of the teeth are broken at the root, meaning the a