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Found 389 results

  1. Hi all My kids and I found this tooth in one of the feeder creeks of the NSR in May. Someone said that it could be a worn Protosphyraena tooth. The leading edge is sharp; whereas, the trailing edge is round. It's also mostly compressed and broad-based. Any information or thoughts is much appreciated! Thanks!
  2. Okay, this may be just wishful thinking, but a girl can hope, right? For your viewing pleasure is an Upper Cretaceous coprolite from the North Sulphur River in Texas, Ozan Formation, Talyor Shale. This little beauty has some unusual fish remains. Any chance this is a caudal fin from a coelacanth? The bones are pretty substantial compared to other fish bones I've seen in coprolites from the area. It does contain scales that are good sized and pretty transparent, with kind of a fingerprint pattern. Obviously, they may not be from the same prey item. Can anyone tell me if these are indeed coelacant bones? If so, do they look like those from a caudal fin? Other thoughts? @Fossildude19 @sharkdoctor @Carl Image 1:
  3. Fish Rib

  4. Mosasaur Vert

  5. Mosasaur Vert

  6. Mosasaur Vert

  7. I had a great day on the North Sulphur River.
  8. Baby Mosasaur Or Turtle?

    I think this is a baby mosasaur vert most likely clidastes but it could be turtle. The experts can't seem to agree.
  9. NSR fossil tooth ID needed

    I had a pretty uneventful - but beautiful - day on the North Sulphur River last weekend, but came home with a fossil that has me puzzled. It's 2 1/2" long, slightly curved, with smooth surface texture. I'm assuming it's a tooth of some sort? Thanks for your help!
  10. Coprolite

  11. Mosasaur Vert

  12. Tylosaur Vert

  13. Mosasaur Vert

  14. I finally got some time off and had a nice day to hike the North Sulphur River Texas. I hit the fossil park which is the most hunted location but I still managed to find some good stuff. The big piece of coprolite is loaded with shells in it. I really like the well preserved Glyptoxoceras heteromorph ammonite and the big Tylosaur vert.
  15. The first week in April seemed like the perfect time to make a trip to the North Sulphur River (NSR). On the day the river was fairly high and mud was a big problem in spots. Fortunately, I was wearing a pair of hip waders; otherwise, the day was nice but largely cloudy. After about an hour of walking and finding nothing, looking down, I saw what looked to be a black circle under the water as I approached a gravel bar. The water was murky and the river bottom, about 5 inches below, was covered in about an inch of fine mud. I bent down and tried to “dust off” the area. Immediately, I could see that there was a mosasaur skeleton, with a good number of unarticulated vertebrae, ribs, and assorted fragmented bones. The black bones showed well against the light grey marl before the silt resettled or the muddy river bottom got churned. My first instinct was to call Mike Polcyn at SMU, however there was no cell service at the spot. I considered leaving and returning when more prepared, but the skeleton was right next to a major walkway for anyone winding down the river. There were already footprints nearby. I knew that if the water dropped just a couple inches the fossil may be completely exposed. Rain was also scheduled for the next 3 or 4 days. I made the decision to excavate what I could, hoping to cause the least amount of damage to the skeleton. As I have never had to use any type of tools in the NSR before, all I had was an old rusted wood chisel. No hammer, so I used a nicely sized rock. You couldn’t really excavate directly at each bone piece or they would fracture. Fortunately, the shale was layered, so that I could go in from the sides and hope that the bone would just pop out. I had to stop frequently to let the water clear as it would get churned up, with zero visibility. At times I had to feel my way around for shale edges. It was getting dark after about 5 ½ hours of digging so I determined to head back to the car. As it was fairly difficult getting to the spot in the first place, it was a lot harder getting back loaded down with 60 pounds of rocks. Adding that much weight when going through fairly deep mud is not ideal, and as many know, the shale river bottom can get as slick as ice. After a number of rest stops I made it back to the car. I got the bones home, washed them in water, and used a metal bristled brush. I was glad to see that almost all the vertebrae were fully intact, although I am sure that I must have lost a few process stems in the removal. I then gave the bones a soak in vinegar and again scrubbed with the brush. About a week later I revisited the spot, this time wearing ice cleats on my waders for traction. The spot had been untouched and I attempted to remove the remaining ribs and bone fragments. I saw no indication that there were any more mosasaur bits, as there didn’t appear to be bones any deeper or in a wider area. Unfortunately, it was sunny and over 90 degrees that day, so after another 5 hours, this time with a geologist hammer, I was again really dragging getting back to the car. I hadn’t gotten into Texas “heat shape” yet this year. After cleaning I could see that some of the vertebrae had been crushed and that a lot of damage had been pre-burial and not in removal. Given the unarticulated nature of the fossil it would appear that there was a good deal of predation before burial. I ended up with 24 vertebrae (cervical and thoracic), a good number of associated ribs, a broken quadrate, the parietal, a portion of the pterygoid, and the braincase. Generally, I retrieved from the back portion of the mosasaur’s skull to right before the rear paddle, with no paddles, jaws, teeth, or caudal vertebrae. I am guessing that it is possibly a platycarpus. The challenge now is getting the rest of the matrix off and assembling the vertebrae in correct order. I have emailed Polcyn for his input, but any suggestions would be appreciated. Using a Dremel tool with a wire brush worked on small spots, but not so well on large patches of matrix. I will make a final trip to the spot when the weather allows and when the water drops a bit more. Happy to provide more photos if needed.
  16. Turtle Vert

    I found this partial vertebra at the north Sulphur River in Texas last week while hunting with my son. I am pretty certain it is turtle but is there any way to identify it further? Thank you for any help.
  17. Squalicorax sp.

    From the album Texas Cretaceous Shark teeth and Other Marine Fauna

    Squalicorax sp. (Whitley 1939). Slant length indicated by longest side.
  18. Good Fishing

    So far the fishing has been good this year at the North Sulphur River Texas. Here's a few of my cretaceous fish finds from my past three hunts.
  19. Cretaceous Fish Vert

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