The Carcharocles megalodon shark (AKA Giant white shark) was the largest shark to ever roam the ocean. This shark ate what ever it wanted. Sevral times a year I find fossil whale bones with Megalodon bite marks on them. The serration marks on the bones line up with different size meg teeth. with a detailed bite mark I can judge the size of the shark with in teen feet of length. The given theory is for each inch on a tooth = ten feet of shark. This idea does not work on all of the teeth. the further back in the mouth the teeth become shorter compaired to it's width.
The linege of this monster started 65 million years ago with Otodus obliquus. The teeth of this species is much more slender than the megalodon. the blade has no serrations and is sharp as a knife. Where the blade meets the root on each side of the tooth there are side cusps. It looks like two smaller teeth sticking out of the root. BEWARE many of these teeth come from Morrocan phosphate mines and are repaired, poorly. Test by getting the tooth wet. Within five minutes if there is repair parts of the root will change color and soften. Full grown shark tooth size 4 3/4 inch.
The second step in the evelution Is called Carcharocles auriculatus appeared 45 million years ago. The tooth evolved serrations and over the next 7 million years the teeth flaten a little but still look very much like the Otodus.These are some of the most Prized by serious collectors. The world record is 5.1 inch long.
The third species is Carcharocles angustiden wich appeared 38 million years ago. At this point the root is much more flatened the side cusps (spikes) are smaller and are more integrated into the blade of the tooth. The tooth becomes wider and longer. The full grown shark tooth size is 5 3/4 inch.
The most ignored species is the fourth member of the evolutionary line is the 20 to 12 million year old Carcharocles chubutensis (AKA Carcharocles subauriculatus). In this member of the family the side cusps Become rounded as they phase out, there is almost no sign left. In some species you realy have to look if they are even there. Many people often mistake this species as megalodon. A full size tooth reaches 6 1/4 inch.
At the 12 million year point the most fearsome version of the Giant white shark linege appears in the form of Carcharocles megalodon!! With a tooth size that reached 7 1/2 inches Megalodon was the most feared predator in the world and then around 2.1 million years ago they Vanished....... or did they?
Quick run down of info >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Generalized Otodus-Megalodon Lineage Shark Genus and Species When it lived Otodus obliquus 45 to 65 million years ago, Early Eocene and Paleocene Carcharocles auriculatus 38 to 45 million years ago, EOCENE EPOCH Carcharocles angustiden 20 to 38 million years ago, Early Miocene and Oligocene Carcharocles chubutensis 12 to 20 million years ago, Middle Miocene Carcharocles megalodon 2.1 to 12 million years ago, Pliocene and Upper Miocene
