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  1. Frightmares

    Small Gainesville shark tooth

    Found this tiny tooth in a Gainesville creek. Looks like it has a cusp on one side. Could it possibly be a juvenile Great White tooth? I looked on elasmo but I don't see anything that quite fits the profile of it. It's about 12mm in length.
  2. Just went to the natural history museum and found these in the display. I REALLY don't think this is great white shark? Might be in the same line (Otodus seems very similar) but I'd rather check with you guys before I ask the museum if they're sure that's what it is, lol.
  3. This fossil is said to be a 6.34 inch x 4.88 inch Megalodon tooth discovered on the Indonesian island of Java! It is estimated that the owner of this tooth was over 15 meters long!
  4. Fossils of 10 unknown species found by sewage plant Paleontologists sifted through thousands of 3 to 3.7 million year-old fossils in New Zealand, which also included great white shark teeth and the spine of an extinct sawshark. by Laura Baisas, Popular Science, August 28, 2023 Auckland wastewater pipe dig reveals 'fossil treasure trove EurekAlert, August 28, 2023 The open access paper is: Bruce W. Hayward, Thomas F. Stolberger, Nathan Collins , Alan G. Beu, and Wilma Blom, 2023, A diverse Late Pliocene fossil fauna and its paleoenvironment at Māngere, Auckland, New Zealand. New Zealand Journal of Geology and Geophysics. Published online: 27 Aug 2023 Yours, Paul H.
  5. jikohr

    Chilean shark teeth ID help

    Hi everyone! I recently acquired some Chilean shark teeth and was hoping to get a second opinion on my IDs of some of the weirder ones, especially the first two since I think they might be Hubbells but I'm wondering if they look like that because of wear especially the first one. The third one I believe is from the extinct hammerhead Sphyrna laevissimus but the crown seems really curved almost hooked and I'm not sure if this species teeth does that. Fourth one I believe is a cow shark upper, I'm leaning Hexanchus griseus though I'm not experienced enough to say if Hexanchus Gigas can be included or excluded Last one is just weird. Weirdly big Isurus retroflexus is my best guess. Any insight is appreciated as always! Tooth 1: Slant Length is 25.4 mm Lower White Shark, Hubbell? Tooth 2: Slant length 24.16 mm Lower White Shark Hubbell? Tooth 3: Slant Length 16.4 mm Hammerhead Sphyrna laevissimus? Tooth 4: Slant length 20.54 mm Cow Shark Hexanchus griseus? Tooth 5: Slant length 37 mm Posterior Longfin Mako Isurus retroflexus?
  6. ThePhysicist

    Great White Shark Tooth (Neonate)

    From the album: Sharks

    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.
  7. I'm looking to buy this Great White Shark Tooth and I just wanna make sure its real. If someone could help me out I would super appreciated it.
  8. I'm looking to buy this Great White Shark Tooth and I just wanna make sure its real. If someone could help me out I would super appreciated it.
  9. ThePhysicist

    Great White Shark Tooth (Young Juvenile)

    From the album: Sharks

    Carcharodon carcharias (Young Juvenile) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru 2nd? Left Upper Anterior A small tooth from a very young great white (< 2 m / 7 ft total length). Teeth of these very young individuals are narrower than adult teeth, and can possess lateral "cusplets" - features that aid in their piscivorous (fish-dominated) diet.
  10. ThePhysicist

    Great White Shark Tooth (Neonate)

    From the album: Sharks

    Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru 2nd Left Upper Anterior 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.
  11. ThePhysicist

    Great White Shark Tooth (Neonate)

    From the album: Sharks

    Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru Lower 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.
  12. ThePhysicist

    Great White Shark Tooth (Neonate)

    From the album: Sharks

    Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru 2nd Right Lower Anterior 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.
  13. ThePhysicist

    Great White Shark Tooth (Neonate)

    From the album: Sharks

    Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru 3rd Right Upper (Intermediate) A small tooth from a newborn great white shark (~ 1.5 m / 5 ft total length). This is a rare intermediate tooth which is mesially-slanted, and reduced in size relative to adjacent teeth. The smaller size of the 3rd upper anterior is an adaptation unique to the dentitions of Lamniforms, thought to concentrate the bite force in the first two upper anteriors.
  14. ThePhysicist

    Neonatal Great White Shark Tooth

    Identification Teeth of Carcharodon carcharias may be identified by triangular crowns with no nutrient groove in the root, no lingual dental band ("bourlette"), and irregular triangular serrations on the edges. Teeth of neonatal individuals (newborn/young of the year) possess small lateral "cusplets," with a deep "V" profile made by the root lobes, and are more narrow than adult teeth1. This narrow tooth form with cusplets is suited for the great white's piscivorous (fish-dominated) diet at a young age. Comments This is an exceptional upper right lateral tooth from a newborn or full-term embryo great white ( ~ 1.5 m / 5 ft total length). This tooth was exported from Peru prior to 1990. References 1. Tomita, T., Miyamoto, K., Kawaguchi, A., Toda, M., Oka, S.-I., Nozu, R. and Sato, K. (2017), Dental ontogeny of a white shark embryo. Journal of Morphology, 278: 215-227. https://doi.org/10.1002/jmor.20630
  15. ThePhysicist

    Great white shark tooth

    From the album: Sharks

    Cool bichrome great white tooth from the Early Pliocene of Southern Peru. Fossils are now illegal to export from Peru, this one was collected prior to 1990 under a Peruvian government permit by the BHI.
  16. ThePhysicist

    Great white shark tooth (juvenile)

    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.
  17. ThePhysicist

    Great white shark tooth

    From the album: Sharks

    One of the most coveted teeth due to the great white's popularity. Being one of my favorite animals, I knew I had to get a nice one eventually. This one in particular is special. Besides being in superb condition, this tooth has a bite mark on the root: three parallel grooves on the labial side of the root gouged by serrations. Bite marks on teeth are uncommon, and a neat feature on this already sweet tooth. This tooth is from the desert of northern Chile. Fossils from Chile are now illegal to export, so as an ethical collector you need to make sure that any Chilean fossils you are interested in were exported prior to the ban.
  18. ThePhysicist

    Carcharodon hubbelli tooth

    From the album: Sharks

    White sharks used to have smooth-edged teeth. They eventually evolved serrations as their diets transitioned to marine mammals from fish. This shark was a transitional form between the smooth-edged predecessors and the modern fully-serrated great white. The serrations on this tooth are not worn-down. C. hubbelli serrations are naturally finer, typically decrease in size towards the tip, and are oriented towards the tip. This tooth is from the desert of northern Chile. Fossils from Chile are now illegal to export, so as an ethical collector you need to make sure that any Chilean fossils you are interested in were exported prior to the ban.
  19. ThePhysicist

    Great white shark tooth

    From the album: Sharks

    Nice color on this early great white shark tooth (Early Pliocene). This one comes from the desert of southern Peru, where a long period of sand blasting has smoothed this tooth to a near-polish, all but erasing the serrations. Fossils are now illegal to export from Peru, this one was collected prior to 1990 under a Peruvian government permit by the BHI.
  20. ThePhysicist

    Great White Shark Tooth

    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. 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.
  21. ThePhysicist

    Great White Shark Tooth

    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. Comments This tooth has a self-inflicted bite mark in the form of three parallel linear gouges in the labial face of the root made by serrations of another tooth.
  22. ThePhysicist

    Juvenile Great White Shark Tooth

    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.
  23. ThePhysicist

    Juvenile great white shark tooth

    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.
  24. ThePhysicist

    South American great whites

    From the album: Sharks

    These white sharks come from the deserts of Chile (left) and Peru (right).
  25. ThePhysicist

    Peruvian great white

    From the album: Sharks

    Some rare colors on this tooth! While it looks like Bone Valley, this great white actually comes from southern Peru (Pisco formation, Early Pliocene). This is about as old as GW teeth get - the modern species evolved from C. hubbelli around the Early Pliocene (~ 5 million years ago). 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.
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