RARE Stethacanthus sp. tooth from the Early Carboniferous-age (Serpukhovian Stage) Zaborie Quarry, Moscow region, Russia. Excellent condition for a matrix-free Cladodontomorph tooth, even though not perfect. This tooth is from the famous “Anvil Shark”! All natural with no repairs or restoration.
 
Private Vault specimens are hand-picked from my personal collection, and are stand-out fossils based on exceptional rarity, condition, coloration, etc., or a combination of such traits, making them very difficult to obtain.