Megalodon - Fossil tooth - 10 cm

Megalodon tooth. A completely natural tooth, very precious, enormous and of beautiful shape and color.
Discovery: Java Island
Otodus megalodon (the species name, megalodon, derives from Greek and means "great tooth"), commonly known as megalodon or megalodonte, is an extinct species of giant shark that lived from Early Miocene to Early Pliocene, about 23–3.6 million years ago (Aquitian–Zanclean), whose large fossil teeth show it had a cosmopolitan distribution. In the past it was thought that O. megalodon belonged to the Lamnidae family and a close relative of the great white shark (Carcharodon carcharias), but subsequent studies reclassified it within the extinct Otodontidae family, a family that split from the lineage of the great white shark during the Early Cretaceous.

Size estimates of the megalodon vary depending on the method used, with maximum total-length projections ranging from 14.2 to 20.3 meters.