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  1. 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.
  2. ThePhysicist

    Shark tooth in situ

    From the album: North Sulphur River

    An incomplete tooth (just the crown) sitting in the red layer. Likely from Cretolamna.
  3. Hey ya'll - despite my best efforts I have a very tough time telling apart the teeth of Cretodus and Cretolamna - most of what I gather so far is that it *seems* that the blade on a cretodus is sometimes slightly longer and less robust compared to cretolamna, but this has large variation and might not even be a real pattern worth noting. Any tips?
  4. AlexMcCarthyWX

    Shark Teeth Identification (Cretolamna?)

    Below are five shark teeth I am trying to make sure I have identified correctly. Teeth 1-4 were found in North Myrtle Beach, though I do not know where tooth 5 is from. I believe that #2, #3, and #4 are C. Appendiculata, but am not confident in that. I wonder if #1 is as well, the shape seems a bit different in my opinion. Thanks!
  5. Ludwigia

    Cretolamna appendiculata (Agassiz 1843)

    From the album: Pisces

    11mm. Kamm Bank Garschella Formation Late Cretaceous Found on Säntis mountain, Appenzellerland, Switzerland.
  6. ThePhysicist

    8/16/20 Trip

    From the album: Post Oak Creek

    Didn't find much this time. I don't think it's rained in a while - the water looked stagnant. Also was picked over well. Favorite find is the mostly complete Cretodus (found it under a fallen tree).
  7. Praefectus

    Sharks in Minnesota?

    Hello. I was wondering if I could get any more information on this tooth. I purchased it from our favorite auction site. The seller described the tooth as unknown genus/species and from the Cretaceous Coleraine Formation of Coleraine, Minnesota. I was unaware that Minnesota had Cretaceous sites? I almost didn’t believe the location provided. I looked up the Coleraine Formation and found that it was Late Cenomanian in age and located really close to Grand Rapids, Minnesota. Based on the age and morphology, I have IDed the tooth as Cretolamna appendiculata. Does anyone
  8. ThePhysicist

    Can you find the shark tooth? (11)

    From the album: Post Oak Creek

    There are two visible shark teeth (that I could see).
  9. ThePhysicist

    9/28/19 Trip

    From the album: Post Oak Creek

    I found less stuff than last time, but I found a nice centrum and a shard of a mosasaur tooth. A couple teeth grouped with Scapanorynchus may be Serratolamna sp.
  10. ThePhysicist

    Cretolamna sp. Shark Teeth

    From the album: Post Oak Creek

    Cretolamna teeth from POC. The largest one seems to be the C. dwardius as described in Welton and Farish's guide, the others are C. appendiculata.
  11. ThePhysicist

    Can you find the shark teeth? (7)

    From the album: Post Oak Creek

    There are four visible shark teeth in this one shot! Hint: three are right next to each other.
  12. readinghiker

    Cretolamnid?

    Back again for more information. These teeth are driving me nuts. I am working on a Coniacian deposit from north central New Mexico, and have gotten around 20,000 fossils from sifting and screen washing ant hills. The vast majority are scapanorhynchids (over 12,000), but there are at least 25 other species represented. These teeth come from a possible barrier island deposit, and the wave action prior to fossilization must have been intense, since almost all the teeth are missing roots. There are around 1500 teeth that look like scapanorhyncus cf. raphiodon, but they have no
  13. Alex_lovegrove

    Wikipedia's Cretolamna

    Hi everyone, I am seeking more information about the spectacular Cretolamna fossil featured in the respective wikipedia article. Aside from being a great fossil it has some interesting features, such as a large second dorsal fin. However, there doesn't seem to be anything else online about this specimen. Does anyone know anything about this - is it in a private collection? Can it actually be referred to Cretolamna?
  14. Praefectus

    Cretolamna sp?

    Hello all, I purchased two small Moroccan shark teeth and would like to nail down their species. I think they are either Cretolamna appendiculata or small Otodus obliquus teeth. Please let me know what you think.
  15. Macrophyseter

    Whole Cretalamna fossil?

    I am currently researching Cretalamna for a written article. When searching for images, I came across this peculiar one that I find interesting. No information on this image seems to exist, whoever submitted this photo did not add any sort of description, other than the shark was identified as "Cretolamna sp." However, I feel too curious to not scrutinize this photo. In my attempt to scrutinize the details of this photo, I've concluded a few things. Firstly, it is likely that the fossil came from Lebanon, possibly Cenomanian lagerstattes in Hgula or similar localities,
  16. Ludwigia

    Cretolamna appendiculata (Agassiz 1843)

    From the album: Pisces

    Cusp 23mm. Upper. From the phosphate plateau at Kouribga, Morocco Maastrichtian, Late Cretaceous.
  17. Petebeh

    NJ shark teeth

    Hi everyone, I found a Cretolamna tooth that has subtle secondary cusplets in the Cretaceous streams of Monmouth county NJ. I was wondering if this is variation within appendiculata or suggestive of biauriculata maroccana. Any thoughts would be appreciated as always. I hope to take some better pictures soon. The tooth in question is on the left with a typical Cretolamna appendiculata on the right for comparison.
  18. HoppeHunting

    Pathological Tooth?

    This tooth was found on my most recent trip to Purse State Park. I believe it is a Mackerel Shark tooth, Cretolamna. I think this may be my first truly pathological tooth because it does appear to be deformed. The crown of this genus does not typically slant to one side so much as this one does. Also, the crown is twisted rather than flat, much like the crowns of Physogaleus contortus. The thing that most leads me to believe it is pathological, however, is one of the cusps. The first cusp seems normal, but the other is twisted at a 90 degree angle and seems pressed against the crown. Can I get
  19. Help needed to identify these shark teeth. Responses are appreciated. Thx.
  20. austinswamp

    micro fossil teeth

    Good evening, I found these two in a gravel bed along a creek in Travis county, Texas. Definitely the smallest I've found. Any input appreciated, thanks
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