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Great White Shark Tooth (Neonate)

ThePhysicist

By ThePhysicist

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Carcharodon carcharias (Neonate)

Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru

Right Upper Lateral

 

A small tooth from a young-of-the-year great white (~ 1.5 m / 5 ft total length). Teeth of these very young individuals are narrower than adult teeth, and possess lateral "cusplets" - features that aid in their piscivorous (fish-dominated) diet. 

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Shellseeker

Shellseeker

Posted

Great Tooth... the cusplets amaze me...  Are the cusplets only in Peru or do you find them in other parts of the world? Found in Florida but I guess too large for Neonatal.  Thanks for sharing.2015Mar11thGWText.thumb.jpg.e72faba2eacb131e47b7a2c087208fdb.jpg

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ThePhysicist

ThePhysicist

Posted

On 4/12/2024 at 8:22 AM, Shellseeker said:

Great Tooth... the cusplets amaze me...  Are the cusplets only in Peru or do you find them in other parts of the world? Found in Florida but I guess too large for Neonatal.  Thanks for sharing.

The cusplets are present in all great whites, they are an ontogenetic feature and not geographically restricted. Nice tooth, it looks like a juvenile lower lateral. See below for an idea of the neonate dentition.

gw_embryonic_dentition.thumb.png.17c072b829a9fc932c572b1e1610f752.png

^ Tomita, Taketeru et al. “Dental ontogeny of a white shark embryo.” Journal of morphology vol. 278,2 (2017): 215-227. doi:10.1002/jmor.20630

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