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Found 24 results

  1. I will be moving to Rapid City this fall for my masters, and would love to do some rockhounding, maybe find some fossils. I did find this great map; http://www.thefossilforum.com/index.php?/topic/76244-fossil-bearing-units-map/ And of course, I have state and other geologic maps (and university library if I want it, probably) at my disposal. I enjoy exploring new territory, for sure. But some tips on good areas/regions to look in would also be great. I am certainly not opposed to prospecting some myself, but tips from fellow rockhounds are always welcome! I don't know
  2. 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.
  3. Dear Forum members, A few years ago I bought this piece from a fellow collector. The description mentioned that it is probably a Platecarpus sp. atlas and axis vertebrae, Niobrara Fm. Gove Co. Kansas. I think that this is acutally the supraoccipital, epioccipital, basisphenoid and several other skull parts. I do not know if this is indeed from a Platecarpus species? if so, which species could this be? I'd like to know whether this piece is Coniacian, Santonian or Campanian in age. Perhaps the preservation already can point in a direction. the fossils are all very flatt
  4. Drizzt0000

    Fossil bone

    Anyone know what this is from. Found in a road cut in Western kansas
  5. Darbi

    Squalicorax sp.

    Recently I purchased these two Squalicorax sp. tooths from an auction website and both are currently on the way. I have a few questions about identification since I know very little about shark tooths and also please correct any misidentifications. Seller A sold me this tooth and it was listed as Squalicorax hartwelli. It is collected from Niobrara formation in western Kansas. Is Squalicorax hartwelli considered a variation of Squalicorax falcatus? Do you agree with seller A's identification above? Seller B sold me this tooth and it was li
  6. Castle Rock

    Niobrara Sponge???

    About a week ago, I was visiting relatives in Western Kansas and was taken to a very small exposure of Upper Niobrara chalk on the family farm. I have been hunting in the area for many years and I had never paid any attention to this particular location. I did not see much material that was worth picking up, BUT then..the unusual texture of this particular "stone" caught my eye. Because the exposure consisted of a few feet of the Upper chalk covered by a thin veneer of sand and gravel (Ogallala?) and then the top soil, I am not at all certain of the geologic age of this specimen. The relat
  7. I have this specimen. Listed this in the Fabrication section. I was told that these are platecarpus vertebrae from the Niobrara Chalk, in Kansas. are these mosasaur? thank you!
  8. Hi there, I purchased these from a dealer and was working if this is genuine. If anyone can help me, it would be much appreciated :D. The dealer said that it is an articulate set of Platecarpus vertebra from the Niobrara Chalk, in Kansas. I will attach more photos below Thank you!
  9. doushantuo

    Somehow,I think we're in Kansas

    MATZKE-lagerstniobrarepturt2007usa-Palaeontology.pdf [Palaeontology, Vol. 50, Part 3, 2007, pp. 669–691] AN ALMOST COMPLETE JUVENILE SPECIMEN OF THE CHELONIID TURTLE CTENOCHELYS STENOPORUS (HAY, 1905) FROM THE UPPER CRETACEOUS NIOBRARA FORMATION OF KANSAS,USA by ANDREAS T. MATZKE provenance:possibly Logan County
  10. Alpha3300

    Niobrara River Fossils Help??

    So my son and I were walking in the Niobrara river west of Verdigre, Nebraska and found some fossils. These were the best 2 that we have. Also found a lot of bone fragments. Any help in identifying these would be great. I have no idea. Thanks in advance. Tom
  11. Hi Everyone, I suddenly have a work trip to the Black Hills of South Dakota coming up next week and I'd like to get out and collect some fossils along the way. I'm driving from Denver to Lead, SD and will be driving north on HW 85 and 18 through Newcastle. I'd be really happy to get a few stops in along the way and any potential information would really be great. Unfortunately, I won't have a ton of time to be able to stop and really dig, so some road cuts or target formations would be super helpful for surface collecting. I'm open to every type of fossil.
  12. I don't know if any of you caught this article in Eurekalert or elsewhere. A Niobrara formation fossil found 70 years ago was studied by isolated experts over time. It was first identified as an algae, then a cephalopod, and now as a cartilaginous fish! Ah, the Internet makes it so much easier now... https://www.eurekalert.org/pub_releases/2018-04/amon-faa041618.php
  13. Peat Burns

    Niobrara Coprolite

    I am wondering if any more information can be gleaned from this specimen beyond "coprolite". Bony fish? Shark? Mosasaur? Niobrara fm., Cretaceous. NW Nebraska. @GeschWhat
  14. This past weekend, my dad, brother and I were able to go out to Western Kansas to search in the Niobrara Chalk formation. We live in Manhattan, KS, so we had to drive about 4 hours to get to a suitable spot. A lot of Western Kansas is private property, so we had to look up GIS maps for Lane and Gove counties, which is where we wanted to search. Sadly, when we got there, one of the roads seemed to not exist; our map led us through the middle of some farmer's cornfield. It wasn't blocked off, but we decided not to take our chances. We started to look around in the area, and about an hour later,
  15. I have been talking snarge with GeschWhat, and sent her some pictures of two coprolites I have collected over the years in the Niobrara Chalk of western Kansas. I have shown these to a few people, and nobody seems to know what caused these strange marks. The one that is marked a lot was the first I found. It was sticking out of a chalk cliff about 5 feet above the floor of the valley. The marks were on the parts of it still in the chalk, so there is no way they were added after fossilization. Years later I found another similar sized coprolite, also in the Niobrara but not associated with
  16. coled18

    Help with Cretaceous Sea Piece

    Hi all, I was inspecting some of my Smoky Hill Chalk finds when I stumbled across this. It is inside/on a partial Inoceramid, most likely Volviceramus grandis. This was all in the Smoky Hill Chalk, Late Cretaceous. Thanks for any suggestions!
  17. CarlosSchwindt

    Hunting for the Niobrara Chalk

    This Sunday my father and I were hoping to take a trip to the Niobrara chalk and check that out and see what we can learn from it. Is there anything you guys can relay to me in terms of places to look or getting land permission? I'm just looking to try to find people to call, places to go, etc. just trying to get a feel for fossil hunting outside of the Fort Hays Limestone and Greenhorn Shale. Thank you so much for any and all info, even on just general paleontology in Kansas
  18. chg057

    Kansas Shark Tooth

    I found this shark tooth yesterday in the first chalk bench of the Fort Hays Member of the Niobrara approximately one foot off the contact of the Carlile Shale (my first keeper from the Niobrara). I was able to prepare it as best I could this morning and realized it doesn't have a root. This was my first matrix prep of a fossil and I'm pretty pleased with how it turned out. I was hoping someone could help me identify it. I think the photos look at the lingual side of the tooth. Also - since it's imbedded in chalk, it is beginning to separate from the matrix. Does anyo
  19. Back when I first started fossil hunting, I researched all I could find for stuff around my area. I went to museums, and looked at a ton of pictures. What I found were awesome complete mosasaurs, plesiosaurs, fish, etc. I went out expecting to find something like that. What I found were scattered pieces and parts of stuff. I had no idea that most of these awesome finds I saw in museums were not dug up looking exactly how they looked on the museum wall. The fact is, was most of these things we see in museums are from individuals scattered along a big area, made up of at least some "recons
  20. TFF, Yesterday, I was fortunate enough to find (what I consider) a tremendous tooth specimen in Gove County, KS. Unfortunately, plant roots got to the tip of it before I could and because I was a space case and didn't bring superglue, the tip and about 10 other pieces connecting the body to the tip fell away when I excavated it. It's relatively long and straight over its length and it appeared to be separated from the rest of the remains. I tried navigating the Oceans of Kansas site for researching what it belonged to. My first guess is Tylosaurus but I could be comple
  21. TFF, After about 10 months, I am finally scheduling myself to make another trip to western Kansas next week - 8/27-8/30. I am conducting field work for my master's thesis which focuses on outcrop modeling and interpretation of Niobrara fracture systems using a drone. I feel fortunate that one of my field areas is famous for its abundance of preserved Cretaceous fauna. While I'm out there, I figured I would try to make an effort to visit some well-known fossil localities that have public access or find private landowners that are also enthusiastic about fossils. Previou
  22. Hello everyone, In anticipation for my trip to Kansas next week, I wanted to see how ya'll would recommend prepping specimens in a chalk matrix. I'm hoping to find some fish bones, vertebrae, and teeth if I'm lucky. I previously was able to scrape and scratch matrix off some stuff I found the last time I went with a carbide-tipped scratcher and I also used my water gun to blow matrix off of the fossils. I found some neat pyrite concretions too and was able to use dilute HCl to nicely dissolve the matrix away but wanted to avoid doing this on fossil specimens since I di
  23. Hello TFF, I recently was able to glue this specimen together after its discovery this past fall. I need help with identification. It was found in the Niobrara in Logan Co, Kansas. After asking a tooth expert, he hypothesized that it is a Hesperornis. I've done a little research myself and I am not convinced of his conclusion. Of the Hesperornis pictures I've seen online, it appears that the top jaw lacks teeth at this part of the jaw, whereas my specimen is full of teeth. Additionally, there are two rows of distinctly different teeth on both the lower and upper jaw. One set is larger, more
  24. chg057

    Platyceramus Or Inoceramus?

    Hi all, I found these recently along Colorado's front range in the Niobrara Fm, about 20 mins southwest of downtown Denver. I am familiar with inoceramus, but these pieces have ridges - something I didn't think inoceramus had. They also have a similar cross-sectional structure with aragonite as the inoceramus fossils I've found, which makes me think it's some other type of clam or bivalve, maybe platyceramus? The largest piece appears to have small attached bivalves. Thanks for your help!
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