A very rare, Sphenodustooth, from a very early shark. Absolutely great preservation - excellent condition with extra sharp cutting edges. These are Upper Jurassic age from Voskresensk, Russia. Perfect tooth.This is a rare, killer Jurassic shark tooth!
The Sphenodus is a veryrare Jurassic age shark from the Moscow region of Russia. The tooth exhibits a long, slender spike-like crown and a very broad, flat bottomed root (an occasional side cusps is present). These teeth are very well preserved. The roots show nice articulation.