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Found 14 results

  1. Hi everyone, I just ordered this beautiful vertebra found in the Niobrara Chalk of Kansas (Cretaceous, 87 - 82 mya) for quite a bargain. Unfortunalty I don't have any precise location as where it was found, for that I am going to contact the seller. The vertebra was listed as being Mosasaur which it could very well be, but since it is a little bit distorted I am not quite sure, especially since many other critters can be found in the Niobrara Chalk. So I was hoping on the expertise of some of our members here who have more knowledge of Cretaceous verts and of Kansas fossils.
  2. 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.
  3. 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.
  4. Hello, I've put teeth here for Id a couple of times and always received a satisfactory answer. I hope you can help me this time too. It is about this Ceratopsidae tooth from the Niobrara Formationn (Wyoming). Unfortunately no fossils of this group are known from this formation and I therefore wanted to ask you if you have any idea what species of dinosaurs the tooth could belong to. The tooth is 1,5cm in size. I hope if you can help me with this! Best regards from Germany!
  5. Found this here in western Colorado I have done some looking online closest thing i can find is fossil/petrified palm wood it would be from the Niobrara Formation, Smoky Hill Member and is Upper/Late Cretaceous. What do you guys think? Did a quick polish too quick as you can see all the scratches haha Thanks anyone that can help
  6. MichealLaurienti

    Coloradan shark tooth id

    Greetings, I am an amateur fossil collector and rock hound and I don’t know too much about fossil species or how to identify them... My dad recently gave me some of his shark teeth he found in the 90s at his coworkers ranch. He never bothered to identify them so I’m hoping to get some help with that, thank you! He showed me the area on a map and told me about the rock types and I’ve come to the conclusion that they were found somewhere in between the Carlisle shale and the Niobrara Formation, though I could be mistaken. The area he found them at is southeast of Colorado Springs on private land
  7. After stuffing my face into tons of scientific articles on Late Cretaceous Lamniformes, I decided that I'd want to draw some sharks. Here's a drawing of the two infamous sharks of the Niobrara Formation Cretoxyrhina mantelli and Squalicorax falcatus as partners-in-crime. I've made the Cretoxyrhina ≈6-7 meters and the Squalicorax ≈2 meters. As 2 meters would be the same size as a very tall 6'6" human, you could imagine the Squalicorax as the tallest ordinary human and see how much bigger Cretoxyrhina is. I've always felt like Squalicorax would commonly accompany predators like Cretox
  8. The Amateur Paleontologist

    Baby tylosaurine skull from Kansas

    Hey everyone I just got news of a recently described set of juvenile Tylosaurus cranial remains! This cranial material is from the Santonian Smoky Hill Chalk Member (part of the Niobrara Fm.) of western Kansas. What's really exciting is that this specimen (FHSM VP-14845) originated from a neonate (newborn) individual, which can reveal numerous details about mosasaur growth and ontogeny. I've attached the paper below: Konishi, T., P. Jimenez-Huidobro, and M. W. Caldwell. 2018. The smallest-known neonate individual of Tylosaurus (Mosasauridae, Tylosaurinae) sheds ne
  9. The Amateur Paleontologist

    Smoky Hill Chalk

    Hello everyone, It's the Amateur Paleontologist. In about a year and a half, I will be going for a few weeks to Kansas, and I am focused on collecting fossils from the Smoky Hill Chalk. I was wondering whether some people could give me a few details (GPS coordinates, landowner contact information...) about various Smoky Hill Chalk sites where vertebrate fossils (in particular reptile remains...) can be encountered relatively commonly. Many thanks for your help. Best wishes, Christian.
  10. Hi all, I was going through some smoky hill chalk coprolites that I recently acquired and found one with some interesting inclusions. At first I was thinking these were skull fragments, but after looking at the Oceans of Kansas site, the only thing that I could find that had a similar texture were Ptychodus sp. teeth and what looks like cartilage. I have never seen cartilage in a coprolite before. I would think it would be easily digested, so perhaps it is just bone. There are also numerous fish bones and scales, so if our poopetrator did dine on Ptychodus, it had a diverse palate. I hav
  11. msantix

    Mosasaur Humerus?

    Hi everyone. I recently bought this Mosasaur fossil that was labeled as a Tylosaurus Humerus, and i just wanted to check if this is indeed a humerus or another part of a mosasaur because looking at some pictures on the internet of mosasaurs (and Tylosaurs) it could also be a radius. It is 5 and a half inches in length and was collected in the Niobrara Formation in the Smoky Hill Chalk (Kansas). Since i am not an expert on mosasaurs (i am still learning about them) and my knowledge is limited, i was hoping someone who knows about mosasaurs could help out in confirming if
  12. @Ramo was kind enough to send me some Niobrara coprolites to study. I decided to prep out a bone inclusion that was visible on the surface. I'm not a fish expert, so I'm guessing a preopercular fragment? Thanks for looking!
  13. I prepped another Niobrara coprolite and found an interesting inclusion. With my limited knowledge of fish anatomy, My best guess is some kind of connecting bone where the vertebrae meet the skull? The coprolite contains both large and small fish vertebrae in addition to this bone. Thanks in advance for your help!
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