Top Jewel 2018 Choker with Megalodon shark tooth (replica), Tibetan Turquoise, Coral and Amber

Megalodon (/ˈmɛɡələˌdɒn, -loʊ-/ meg-ə-lə-don or /ˈmeɪɡələˌdɒn, -loʊ-/ may-ghə-lə-don, meaning "big tooth", from Ancient Greek: μέγας (megas) "big, mighty" and ὀδoύς (odoús), "tooth"—whose stem is odont-, as seen in the genitive case form ὀδόντος, odóntos) is an extinct species of shark that lived approximately 15.9 to 2.6 million years ago, during the Cenozoic Era (middle Miocene to end of Pliocene). The taxonomic assignment of C. megalodon has been debated for nearly a century, and is still under dispute. The two major interpretations are Carcharodon megalodon (under family Lamnidae) or Carcharocles megalodon (under the family Otodontidae).[3] Consequently, the scientific name of this species is commonly abbreviated C. megalodon in the literature.