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Found 16 results

  1. fossilsonwheels

    Pisco Formation Carcharhinus teeth

    I’m starting to work on the Carcharhinus and related shark displays. I’ve got three teeth from the Pisco Formation, Sacaco location that I can’t quite nail down as far as ID. I know they could end up being Carcharhinus sp but I thought I’d give an ID post a chance. I’m not really confident in my ability to ID the gray sharks. The first two look like they might be C. obscurus to me but I know there would be other possibilities. They are both right around 13mm on the slant so not very large. The first one is in better shape, the second is pretty worn. The third tooth is actually a really cool looking tooth. It’s about 10mm on the slant and 14mm wide. This one has me pretty stumped. Could be a C. brachyurus but none of the teeth in my collection match it enough for me to be sure.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. ThePhysicist

    South American great whites

    From the album: Sharks

    These white sharks come from the deserts of Chile (left) and Peru (right).
  13. 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.
  14. Macrophyseter

    DKNC-002 Carcharodon carcharias (Sacaco)

    From the album: Elasmobranchs

    TFF DKNC-002 Tooth height is ≈1-3/8 inches (3.5 cm)

    © David Kn.

  15. Fn8

    Pisco Formation find

    Good evening everyone. Today I've purchased for few bucks what I suppose being a mammal find. However even after trying to find some infos about the dentition (considering it as a tooth) of the cetacean genus of late miocene Peru I could not find somethinv similar to it. Thanks for the help
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