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  1. EPIKLULSXDDDDD

    Cretoxyrhina mantelli, Bouldin Flags

    From the album: Eagle Ford Group

    Cretoxyrhina mantelli, Travis Co. Cenomanian, Cretaceous Oct, 2022
  2. EPIKLULSXDDDDD

    Cretoxyrhina mantelli, Arcadia Park

    From the album: Eagle Ford Group

    Cretoxyrhina mantelli, Denton Co. Turonian, Cretaceous Jan, 2023
  3. ThePhysicist

    Cretoxyrhina tooth

    Identification Cretoxyrhina teeth are simple in design, having a triangular crown with smooth enamel and non-serrate edges, a thin lingual dental band, rounded root lobes, a lingual root protuberance, and no nutrient groove.1,2 Comments This tooth is from a latero-posterior position, given the crown's distal curvature. The chalk preserved this tooth very well - the enamel retains a sharp gloss comparable to that on modern sharks' teeth. References 1. Bourdon, Jim, and Michael J. Everhart. “Analysis of an Associated Cretoxyrhina Mantelli Dentition from the Late Cretaceo
  4. SomethingIsFishy

    Kansas Shark Vertebrae/cartilage disk?

    I have recently found this fossil in north western Kansas (graham co.) I don't know if this is a shark vertebrae/cartilage disk or just a basic fish vertebrae. (Don't mind my bad prep work. I just started peeping fossils recently.)
  5. A couple of weeks ago, @Jackito, his son, and I took a trip out to one of his favorite Eagle Ford sites. For those of you who are familiar with Carter's posts, this was once the famed location of the so-called "giving rock", so the bar was set high for the day. I've come across some of Austin's eagle ford material in the past, but it was always only the leftovers of what had been washed through miles of rushing creek water. This was my first time getting to poke through the source material, so I was eager to see what could be found. The water was low and the temperature mild. I was thankful I
  6. Fatigued_Fossil_Hunter

    Cretaceous shark teeth I found in Grayson County, TX

    Eagle Ford Group, Post Oak Creek, Sherman, TX, USA I'm curious to know the identity of these shark teeth so help from experienced fossil hunters would be much appreciated!
  7. ThePhysicist

    Cretoxyrhina tooth (3)

    From the album: Sharks

    A gorgeous tooth from one of my favorite sharks! The enamel isn't polished - the chalk preserves its shine extremely well - it's as shiny as when it fell out of the animal's mouth!
  8. ThePhysicist

    Cretoxyrhina tooth (2)

    From the album: Sharks

    A beautiful tooth from one of my favorite sharks. This one is extra special because of the self-inflicted bite mark - a gash seen on the left in lingual view. Apparently their bite was strong enough to cut their own teeth!
  9. ThePhysicist

    Cretoxyrhina tooth

    From the album: Sharks

    One of my favorites - the "ginsu" shark. This one was found at the DFW airport in the 80's.
  10. ThePhysicist

    Cretoxyrhina mantelli (6)

    From the album: Sharks

    Nearly flawless lateral "ginsu" from the Smoky Hill Chalk of Kansas, USA.
  11. ThePhysicist

    Cretoxyrhina mantelli (4)

    From the album: Sharks

    Cretoxyrhina mantelli Ginsu shark Niobrara Fm., Gove Co., KS (leftmost 2 teeth) Eagle Ford Group, Sherman, TX (largest tooth) Eagle Ford Group, Dallas, TX (rightmost 2 teeth) A collection of teeth from a formidable Late Cretaceous lamniform shark. This species competed with other sharks and marine reptiles in the Western Interior Seaway ~ 90 Ma. It likely filled a similar niche that the Great White Shark does today. The ginsu was on average larger than the Great White. Oh, it also ate dinosaurs.
  12. ThePhysicist

    Cretoxyrhina mantelli (5)

    From the album: Sharks

    Cretoxyrhina mantelli Ginsu shark Eagle Ford Group, Dallas, TX Found at the DFW airport in the 80's, this anterior tooth shows some nice coloration.
  13. ThePhysicist

    Cretoxyrhina Tooth

    Identification: ginsu teeth have broad lingual dental bands, rounded root lobes, a strong lingual protuberance in the roots of anterior teeth, smooth crown faces, and no nutrient groove. Notes: Has damage on the lingual side, perhaps a self-inflicted gash as the tooth fell out of the mouth. Otherwise, a perfect tooth with a very sharp point.
  14. ThePhysicist

    C. mantelli tooth damage

    From the album: Sharks

    Closeup of a C. mantelli tooth with unusual wear. I suspect it could be from a tooth in the opposing jaw, or that it may have been bitten in the process of falling out of the mouth during feeding.
  15. Untitled

    Cretoxyrhina mantelli Mississippi

    From the album: Cretaceous Shark Teeth

    Cretoxyrhina mantelli from Monroe County, Mississippi.
  16. Untitled

    Cretoxyrhina mantelli Mississippi

    From the album: Cretaceous Shark Teeth

    Cretoxyrhina mantelli from Monroe County, Mississippi.
  17. From the album: Cretaceous Shark Teeth

    Eagle Ford Group Cretoxyrhina from Texas.
  18. From the album: Cretaceous Shark Teeth

    Eagle Ford Group Cretoxyrhina from Texas.
  19. Untitled

    Newborn? Cretoxyrhina mantelli Russia

    From the album: Cretaceous Shark Teeth

    Beautiful and very small, cusped Cretoxyrhina mantelli from Ryazan Region of Russia. Cenomanian in age.
  20. Untitled

    Newborn? Cretoxyrhina mantelli Russia

    From the album: Cretaceous Shark Teeth

    Beautiful and very small, cusped Cretoxyrhina mantelli from Ryazan Region of Russia. Cenomanian in age.
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