The earliest megalodon fossils (Otodus megalodon, previously known as Carcharodon or Carcharocles megalodon) date to 20 million years ago. For the next 13 million years the enormous shark dominated the oceans until becoming extinct just 3.6 million years ago.  
Teeth are also the hardest part of a shark's skeleton. While our bones are coated in the mineral calcium phosphate, shark skeletons are made entirely from softer cartilage like our nose and ears. 
This is an excellent fossil, and you can earn a piece of history by purchasing this fossil today. This specimen is polished.
wt. .240 lb
3.25" x 2.50" x .50"