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Found 25 results

  1. Would love this community’s input on what I found on a trip to Ladonia Fossil Park two weekends ago - I’m trying to determine what - if anything - I found. Trying to find a good fossil guide to aid in searches - any recommendations appreciated!
  2. ThePhysicist

    Tylosaurus tooth

    From the album: Squamates

    A tooth from a large mosasaur that inhabited the Western Interior Seaway during the Late Cretaceous. Tylosaurus was an apex predator with thick teeth that allowed it to predate on anything in its ecosystem from large turtles to sharks. This particular tooth has clear feeding wear on the tip.
  3. ThePhysicist

    T. proriger Tooth Fossil Profile

    From the album: North Sulphur River

    A worn Tylosaur tooth from Ladonia, TX. Found Oct. 7, 2018.
  4. Enos Squared

    Dallas Area Trip March 2022

    Hello everyone! 8 months ago I drove across the country and stopped at Ladonia fossil park. I had a great time but only got a few hours in, and now I'm planning to head back to Texas sometime next month to do some more searching. I know that the fossil park is picked through pretty well, so I'm wondering if anyone has advice for other places to visit in the general area? I hope to be near the Dallas area for several days and am more than willing to travel/hike a good distance. I'm primarily interested in ammonites, echinoderms, and - if at all possible - finding a mosasaur tooth. Any tips would be hugely appreciated!
  5. ThePhysicist

    Muddy riverbed

    From the album: North Sulphur River

    Made my first trip to NSR since construction began. There's a significant accumulation of mud, much less ground for hunting fossils.
  6. ThePhysicist

    Small Mosasaur vertebra in situ

    From the album: North Sulphur River

    The only way I can find fossils - if they're right out in the open! This one conveniently perched itself on a rock.
  7. Titan

    Ozan Mystery Object

    I found this in-situ in the Ozan formation and I can't figure out what it might be. I thought the concentric circles might point to a highly worn gastropod. Anyone have any ideas? Thanks!
  8. Mercedes Coxca

    NSR Finds

    Hey y'all! This is my first ID post, so please tell me what I should do/change for future posts <3 These are all fossils I have found in the North Sulphur River in the last two months. I'm only asking about a few in the picture because I know there's a lot and I figured I'd only focus on a few at a time <3 sorry y'all, didn't plan ahead very well. I have more pictures of all of them though if needed. 1) One (bottom middle) is ID'd (via Dallas Paleo Group on FB) possibly as coprolite or a 'jumble'?- looking for clarification as well as what the things inside the fossil might be, if possible? 2) I think another (the thick triangle whitish thing-top left) might be an oyster/shell thingy? Or a rock bahahaha xD This is the side view: 3) This one (bottom left) is a pain to get pictures of. My camera refuses to focus properly on it. He's very thin and ever so slightly 'pyramids' in the middle, as well as curves along one side a bit. I thought it might be a scute of some sort? Unsure. It's as dark as it looks in the last picture. Same color as the first. Camera did something funky. 4) And the last (top middle) for now is some weird black rock thing that may be nothing for all I know. Kinda makes me think of a claw in the way it's cupped and has blunt teeth along a ridge. Could be another shell thingy for all I know! It's very thick on one side and then becomes thinner as it reaches the ridged edge. Appreciate any and all help as well as any tips you can give me! I can post more pictures if necessary, just didn't want to overload the post more than I already have. Thank you in advance <3
  9. ThePhysicist

    Shark teeth (and sawfish)

    From the album: North Sulphur River

    Shark teeth (at least in my experience) are really hard to find at NSR. The best method would probably be to sift for them in gravel, but I've yet to do that. The odd looking one is actually the base of sawfish rostral tooth.
  10. This last weekend I hit the NSR along with the crowds and decided to start at the Ladonia Fossil park. I got there shortly after dawn and already there were several groups of people down in the river. I don't mind walking in others footsteps and in fact quite a few of my good finds have been within feet of where others have already walked so I started off and within about an hour of slipping and sliding around on the marl I found two of the ugliest associated mosasaur verts I've yet to lay eyes on. Maybe they will clean up nicer than they look now but in my experience the preservation in the highly fossiliferous 'red-zone' is generally terrible compared to the marl above and below it. I was able to extract the verts under the careful watch of a committee of buzzards. This squalicorax sp. tooth was in the matrix around the mosasaur verts. Throughout the day I found a few more things such as a bone (possibly fish - not sure) with predation marks: I think the growth rings on bones are particularly cool: A fish something - tooth? (again not sure the ID): Very small jaw section: An ammonite that I considered tossing several times over due to the weight and the fact that's broken in two places: A small fish vert section: And finally vert #1: and #2: Eventually I hope to prep these out, but it'll have to wait till I get my prep station all set up. Thanks, - James
  11. ThePhysicist

    Tylosaurus Tooth

    Identification: Mosasaur teeth can be difficult to assign to a species. However, given the size of the tooth, it must be from T. proriger - the only Mosasaur in the formation large enough to produce this tooth. Notes: Shows feeding wear (pictured) with mostly complete enamel. Uncommon find for this formation/locality. Identifiers: This identification is supported by Michael J. Polcyn (researcher specializing in the evolution of Mosasaurs) of Southern Methodist University, Dallas, TX, USA. Citation: COPE, EDWARD D., 1869, Remarks on Holops brevispinus, Ornithotarsus immanis, and Macrosaurus proriger, Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 21, Page 123, ISSN: 0097-3157, https://www.biodiversitylibrary.org/item/30466#page/149/mode/1up
  12. ThePhysicist

    NSR Hunt 5/20/2020

    Hey y'all, just got back from a trip to the NSR. Haven't been in a while, so it was nice to get back and find some neat stuff. I've only been 4-5 times and I finally found a sizeable vert chunk. I also found some large fish bones which I believe to be from xiphactinus. I also found what's probably a rock, but I grabbed it in case it was some worked piece of stone. I have no knowledge whatsoever on arrowheads and artifacts so someone else can be the judge of that.
  13. ThePhysicist

    Mosasaur bone in situ

    From the album: North Sulphur River

    Found 5/20/2020
  14. ThePhysicist

    Mosasaur vertebra in situ

    From the album: North Sulphur River

    Found 5/20/2020
  15. ThePhysicist

    Artifact

    From the album: North Sulphur River

    You can also find worked stones from Native Americans at NSR. I'm not certain of the age. This is the first one I've found.
  16. ThePhysicist

    Mammal teeth

    From the album: North Sulphur River

    What's neat about NSR is that you can find Pleistocene-aged remains right next to the bones of marine reptiles from the Late Cretaceous. The river flushes everything out of the walls and mixes it all together.
  17. ThePhysicist

    Ammonite

    From the album: North Sulphur River

  18. stacylaray

    Weird find

    Found today, Ladonia Fossil Park, North Sulphur River, in 4" of water among river rocks and the occasional piece of ammonite with suture pattern. I don't know what period. A little over an inch long, black/dark gray, 1/2 inch thick at the widest part, has holes on the underside.
  19. Finally made a trip to the North Sulphur River. As a first timer, I went straight to the Ladonia Fossil Park. It has a large parking area with clear access to the river bottom. Keep in mind, the access is good, but the steps are HUGE. Going down isn't too difficult, but getting back up had me climbing them on my hands/knees. There is an ATV trail on the east side of the bridge that I was told has a more gradual slope, but you'll need to keep an eye open for snakes/insects, as its heavily overgrown with vegetation. I had a great time searching the river bed and banks for fossils. I found tons of baculite segments and lots of vertabrate bone fragments (likely mosasaur). Very few well preserved specimens with the majority worn beyond identification. Also found a few oyster shells, gastropods, and shark teeth. Tools aren't necessary, but you may want to carry scraping tool or a small pry bar for working the bank exposures. Screen boxes also come in handy for sifting through sediments in the river bed. A few words to the wise: - during spring/summer, be sure to wear sunscreen and stay hydrated - use a walking stick to steady yourself and for testing areas ahead of your walk path - try to stay on gravel bars, as the mud can be deep especially along edge of the banks - when walking through water between gravel bars try to avoid walking on shale layers as it is extremely slippery - be aware that there is lots of broken glass, concrete rubble, rusty metal, and other debris - for the above reasons and the fact that they are not very supportive, I would strongly advise against flip flops with firsthand knowledge (in the words of Jimmy Buffet, "I blew out my flip flop, stepped on a pop top........." ) And lastly, always check the water level of the river before making the trek - go to the National Weather Service for North Sulphur River near Cooper, TX (Gauge CPPT2) https://water.weather.gov/ahps2/hydrograph.php?wfo=fwd&gage=cppt2&hydro_type=0 I can't wait to go back.
  20. Breanne

    North Sulfur River Fossil ID

    Hello! I Found this while fossil hunting at Ladonia Fossil Park in Texas, anyone know what it could be? Thank you!
  21. Breanne

    North Sulfur River Fossil ID

    I suspect this is an ammonite but I am not sure. I found it at Ladonia Fossil Park in Texas. Any ideas?
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