Petalodus alleghaniensis; an Extinct Petalodont shark
A nice Posterior tooth. Beautifully articulated. Matrix free. An excellent collector's piece from an old collection!
Age: Pennsylvanian (300 mya) ; Stanton Fm. (Missourian)
Location: Louisville, Cass Co., Nebraska
Z138 SIZE: 3/4" x 15/16" W