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  1. 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?
  2. isurus90064

    Extraordinary Common Teeth

    Hey guys, I've been off the radar for awhile .. work you know .. been working on Siggraph for those of you who are familiar with software development. Just wanted to start a new topic here .. This one is right at 3.00" - 7.62cm C. carcharias Bahia Inglesa Formation South of Caldera Provincia Copiapo III Regio de Atacama Chile
  3. ThePhysicist

    Cretodus posterior

    From the album: Post Oak Creek

    Posterior Cretodus sp. (crassidens?). 4 mm.
  4. sharko69

    Texas Cretodus

    Have done a bit of hunting at my local creek system that is very close to where I live and have been fortunate to turn up a few large complete Cretodus over the last couple of weeks. Largest are 57mm and 56mm and we’re found just a hundred feet apart two days apart.
  5. 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).
  6. Captcrunch227

    Cretodus Article Needed Please

    Howdy friends! I'm looking to see if anyone has a copy of this article from JVP that they'd be willing to share please. It appears that Cretodus crassidens is no longer valid in North America. Would be super helpful to give this a read. It was in the Journal of Vertebrate Paleontology Volume 39 Issue 4. A New Large Late Cretaceous Lamniform Shark from North America, with Comments on the Taxonomy, Paleoecology, and Evolution of the Genus Cretodus Kenshu Shimada, Michael J. Everhart Thanks a ton everyone!
  7. 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
  8. Untitled

    Cretodus crassidens Texas

    From the album: Cretaceous Shark Teeth

    Cretodus crassidens from Eagle Ford Group. Cedar Hill, Texas.
  9. Untitled

    Cretodus crassidens Texas

    From the album: Cretaceous Shark Teeth

    Cretodus crassidens from Eagle Ford Group. Cedar Hill, Texas.
  10. ThePhysicist

    Cretodus sp. Shark Teeth

    From the album: Post Oak Creek

    Some of the largest Cretaceous shark teeth you can find are from this genus. These are most likely C. crassidens.
  11. Just like the Western Interior Seaway needed any more large predators https://phys.org/news/2019-11-fossil-unexpected-discovery-million-year-old-shark.html
  12. doushantuo

    cretaceous,USA,Pisces

    A new large Late Cretaceous lamniform shark from North America, with comments on the taxonomy, paleoecology, and evolution of the genus Cretodus Kenshu Shimada &Michael J. Everhart Article: e1673399 | Received 30 Nov 2018, Accepted 09 Sep 2019, Published online: 18 Nov 2019 LINK (description of Cretodus houghtonorum n.sp) edit:5,30 MB,or thereabouts relevant: Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character Vol. 210 (1921), pp. 311-407 V I I I .— On the Calcificati
  13. ThePhysicist

    post oak creek shark tooth

    Hey y'all, this is a shark tooth I found a couple months ago in post oak creek. I initially thought it was a cretodus, but now I'm having second thoughts. The 4th and 5th pictures are cretoxyrhina vraconensis and dwardius woodwardi, respectively. Thanks!
  14. It’s a been a while with a drought here in Texas. Got some big rain recently and this guy popped out. Eagle Ford/Atco 86-90 mya
  15. ThePhysicist

    Cretodus crassidens

    From the album: Post Oak Creek

    Tooth from a large Cretaceous shark. Scale bar = 1 cm. Collected 7/30/19.
  16. ThePhysicist

    Can you find the shark tooth? (8)

    From the album: Post Oak Creek

    A large cretodus tooth in situ. Collected 7/18/19.
  17. ThePhysicist

    Big teeth!

    From the album: Post Oak Creek

    Large shark teeth including cretoxyrhina, cretodus, and ptychodus. (The left ptychodus would've been massive had it been complete.) Scale bar = 1 cm. Collected 7/18/19.
  18. ThePhysicist

    Post Oak Creek ID

    Hey y'all, I went to POC for the first time yesterday and came back with some stuff I need help ID'ing. 1. Shark teeth - Cretodus crassidens? 2. Large shark tooth - Cretoxyrhina? 3. shark tooth - Scapanorhynchus? 4. Enamel/tooth frag - mosasaur? 5. shark tooth - Cretolamna appendiculata? All scale bars = 1 cm. The enamel (4) is < .5 cm in length. 4 is definitely not shark - too thick - and reminds me of crocodiles, but I haven't heard of any crocs there. I also found another mosasaur tooth frag. I know this can be really difficult, so I really appr
  19. sharko69

    Beautiful Texas Tooth

    Went on a hunt with my son this past weekend. Had a friend join us for part of the day. We hit a part of the creek that does not get hit too hard. Was just telling her that I had found some large partial Cretodus earlier in this spot when she tells me she found a great tooth. She wasn’t kidding. Best tooth I have seen all year.
  20. Hi everyone! So it has been a busy week for me, as I have things to post but haven't found the time. I just got back from Gemworld 2017 and I would like you opinion on my one and only purchase. I went to the show with the mindset that if I bought anything at all it had to be something special. I normally do not buy fossils. So after walking around and looking at many interesting specimens, what caught my eye was a Cretodus crassidens tooth from South Dakota in matrix. I have wanted one of these for awhile. The tooth is pretty nice. It is all intact. But there are two cracks which run though t
  21. David E.

    Fun day on POC

    Hola! I decided to get up early this morning to head over to Post Oak Creek to see if I could make up for the lack of production on the NSR (North Silted Ridges). I headed over to my favorite spot to sift and after seeing a tooth or two lying on the surface, I decided to walk the entire gravel bar to see what else may be up on top. I came across a monster horse shoe (this guy must have been a beast) and jokingly thought to myself that it meant I was going to have a good day. Well, that joke turned into reality. I walked past where I found the horse shoe and this honker was lying in wait f
  22. Went looking for arrowheads and didn't find much but this made up for it. Saw it in the water as I was about to leave. Ties my biggest tooth and much wider. This thing is a biggin! Late cretaceous North Central texas Eagle ford group 85-90 mya
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