Peripristis semicircularis ; an Extinct Petalodont sharkA very rare, well preserved GEM posterior tooth. A complete tooth - crown & root - extremely rare! Beautifully articulated. Matrix free - incredibly rare. An exceptional collector's piece from an old collection! The best available! Reverse Photo.
Age: Pennsylvanian (300 mya) ; Stanton Fm. (Missourian)
Location: Louisville, Cass Co., Nebraska
Z149 SIZE: 5/16"