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Item:166670276535Fossil Mako Shark Tooth Isurus hastalis (EA7781) Nth Carolina USA.. Fossil Shark Tooth (Cos mopolitodus) Isurus hastalis Age : Miocene Location :Aurora District, Beaufort County, Nth Carolina,USA . Lenght of longest edge: 45 mm
This tooth is indeed a fossil, from an extinct Mako
shark.
It comes from an extinct Mako shark called Isurus
hastalis, which lived approximately 5 to 30 million years ago during
the Miocene & Oligocene periods.
Isurus was distributed throughout the oceans of the world,
with fossil remains found from Belgium to California; from Morocco to Peru.
They are also found at a number of sites in Australia.
Only the teeth, vertebrae and fin bones of these mega
sharks have been found, because shark skeletons are mainly made of
cartilage, which decomposes too quickly for it to become fossilised.
The lack of serrated edges on this tooth makes it easy to
distinguish from the Carcharocles/ Charcharodon
species; Carcharocles megalodon & augustidens
The teeth of the augustidens is distinguished from the megalodon by
the two small side lobes or blades on the edge of the main blade at its
root.