In Search of Fossils

It's that time of year again. The 2007 field season is upon and we'll be going strong until the end of October. I know the turtle isn't a fossil yet, but it was a nice surprise to see him crossing the road right in front of our van. This could be a good sign. Who knows maybe we'll find an giant sea turtle.
Earlier that day we did indeed find a fossil, a partial dentary (lower jaw) of a mosasaur. However it was recovered from the bottom of a ditch. We did go back to try and examine where it came from. It's quite possible it's from the Niobrara Formation. This is not normally where we find fossils in this area. This is a first for me.