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Showing results for tags 'juvenile white shark'.
Found 3 results
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From the album: Sharks
Lower tooth from an early great white (Early Pliocene). Juvenile teeth are narrower than those of adults, more suited to a piscivorous (fish-eating) diet. Fossils are now illegal to export from Peru, this one was collected prior to 1990 under a Peruvian government permit by the BHI. -
Identification Teeth of Carcharodon carcharias may be identified by erect, triangular crowns with no nutrient groove in the root, no lingual dental band ("bourlette"), and irregular triangular serrations on the edges. Teeth of juveniles are smaller in size, and are comparatively narrower than adult teeth, suited for a piscivorous diet. Comments This tooth is Early Pliocene in age, which is about as old as great white shark fossils get. Fossils are now illegal to export from Peru. This tooth was collected by the BHI during a series of expeditions to Peru 1985-1990 under a government permit.
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From the album: Sharks
Great whites didn't start out "great." As young, small animals, they had narrower teeth suited for grasping slippery fish. As they age, the teeth broaden as their diet transitions to marine mammals. This small tooth measures ~ 1" on the slant and comes from the Early Pliocene of the Pisco formation in southern Peru. This is about as old as great white teeth get, they evolved from C. hubbelli near the start of the Pliocene (~ 5.3 Ma). Fossils are now illegal to export from Peru, this one was collected prior to 1990 under a Peruvian government permit. As ethical collectors, please do your due diligence to verify any Peruvian fossils you're interested in were exported prior to the ban. I respect any country's decision to protect their natural heritage in such a manner.
