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  1. Hey all Shark teeth confuse me.... it seems the more I know, the less I know! The small rock and fossil shops I visit (when I can get near them - no shops near home) often sell shark teeth labeled Otodus (O. obliquus, these shops usually just give the Family name - Mosasaur, Spinosaur, Otodus etc). This is the only shark tooth I've been commonly exposed to "in the flesh". I've done a bit of digging on the net and now I'm not sure all teeth I have seen (and purchased) are Otodus - which is fine with me, I just like to be accurate. I have one which I was told is Cretalamna, it def
  2. Jurassicz

    Cretalamna appendiculata? Morocco

    I got these 2 shark teeth a few years ago. They are from Khouribga, Morocco I labeled them as Cretalamna appendiculata and Cretaceous-Eocene as I saw several Cretalamna appendiculata labeled sometimes as Eocene and sometimes Cretaceous. Does anyone know if its the correct species or how to identify shark teeth from Khouribga?
  3. ThePhysicist

    6/17/21 Trip

    From the album: Post Oak Creek

    Nothing extraordinary, but I found an area with several chunks of matrix with teeth in them.
  4. ThePhysicist

    Matrix chunk (1)

    From the album: Post Oak Creek

  5. giannisergente

    Shark Tooth ID (Otodus Appendiculatus?)

    Hi everyone. This is my first post (the second one actually, after greetings:). I was wondering the correct identification for these two shark tooth. They come from Balegem (Oosterzele, Belgium), I don't have any other information about the period. I bought them on a market oline as "lamna appendiculata" (it should be a synonim for "Otodus Appendiculatus" (Agassiz, 1843) (??)). Size: 2/2.5cm. I'd appreciate a lot your opinions about that. Thanks in advance. gian.
  6. bthemoose

    Otodus obliquus?

    I found the tooth below this morning at Douglas Point (Aquia Formation, Paleocene) in Maryland. The cusp is fairly narrow, it's missing one cusplet and the other is small and/or worn down. But between the prominent lingual protuberance and what looks to me like a small bourlette, I'm getting an Otodus obliquus vibe. What do you think? I also found a tiny Cretalamna appendiculata -- just over a quarter of an inch.
  7. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. A juvenile specimen. Could be an Eostriatolamia sp., I'm unsure.
  8. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. I could be wrong, it is a peculiar positional tooth.
  9. Hello everyone, I was wondering what the Maximum size for a late Cretaceous Cretalamna was? I have this tooth from Mississippi which clocks in at 1 29/32” (with root chipping), and can’t find much information as to the largest size that the genus reached in the Cretaceous.
  10. fossilsonwheels

    Interesting "Cretalamna"

    Sold as Cretalamna, it is from the Tambov Region of Russian. Cenomanian. I found this to be an interesting tooth though I am not convinced the ID is accurate. @Chase_E has a gallery of teeth from this region and a couple of other locations from Cenomanian Russia. Using those posts as a guide, I believe the tooth may be a Cretoxyrhina, perhaps C. vraconensis. I see quite a bit of similarity with a couple of Chases teeth but I am using one as comparison in this post. I could be, and probably am, wrong about that assessment lol Any input is welcomed !!
  11. fossilsonwheels

    Demopolis Formation Shark teeth

    I’ve been working on getting all of our shark teeth properly identified so I went back to a few teeth from the Demopolis Formation. These are from the Frankstown location in Mississippi. The first one up is right around 1” and the little cusps are what initially confused me. Is this a Cretoxyrhina perhaps? I found some images of Cretoxyrhina with cusps that looked similar.
  12. Untitled

    Cretalamna borealis Russia

    From the album: Cretaceous Shark Teeth

    Cretalamna borealis from Stary Oskol, Russia
  13. Untitled

    Cretalamna borealis Russia

    From the album: Cretaceous Shark Teeth

    Cretalamna borealis from Stary Oskol, Russia
  14. Captcrunch227

    COVID Containment Collecting

    After spending a great deal of time in the house lately do to COVID and days and days of rain, I took the family on a nice leisurely walk to our favorite hunting spot on this beautiful North Texas day. While the kids wwere off collecting some beautiful Turitellas and oysters, I had only one thing on the mind, shark teeth. Cretalamna seems to dominate this site, however some large Cretodus semiplicatus have been found. A Ptychodus latissimus and 2 Plesiosaur teeth have also been found at the site, filling us with hope on each trip for an incredible find. The trip was a p
  15. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  16. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  17. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  18. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  19. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  20. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  21. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  22. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  23. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
  24. Chase_E

    Cretalamna sp.

    From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia

    Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
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