Pachyrhizodus partial skull and jaws
This is a partial upper and lower jaw and a partial premaxilla from the other upper jaw from a Pachyrhizodus. Two skull pieces were also present. These pieces are preserved with a penetrant/stabilizer. The lower jaw is 9 3/8" long and 2 1/4" at the widest point. The upper jaw measures 7 5/8". The premaxilla is 1 1/2" long. The largest teeth are ~1/4" to 5/16". Top skull plate measures 7" x 6 3/4". This fossil is from the Niobrara Chalk of Western Kansas.