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Found 137 results

  1. Possible partial Ptychodus ???

    Found this this morning while going through some of the POC gravel I brought home last weekend. Whatever it is, it's a first for me from the POC. Looking online and in the forum, it sort of has the look of Ptychodus mortoni. Am I close or way off base? If I'm way off base, give me a break. I turned my thinker off once the work week ended. Thanks in advance David
  2. Septarian nodules sometimes are misidentified as turtles, coprolites and other fossils. Septarian nodules are hardened mudballs that dehydrate, crack and fill with minerals. The cracks in this one filled with fluorescent calcite. The ribs that stick out are the calcite that filled the cracks in the mudball. This nodule was found in calcareous shale from the Late Cretaceous Arcadia Park Formation. The exact age of its formation is unknown but probably occured in the Late Cretaceous. Septarian nodules from the Arcadia Park Formation are common in north Texas. Some contain spectacular calcite crystals when cracked open.
  3. I found a very nice variety of items while hunting my new favorite creek. I think the formation is Eagle Ford. I found a nice ammonite bed that I"ll start checking after a good rise. I had to leave the 50 lb + ammonite until I can get a boat or raft in there to float it out 2 miles. The old US military button was my favorite find of the day. The button is 1902 or later but still very old and makes you wonder how it ended up there? Two of the shark teeth are pretty big.
  4. Texas Cretaceous Fish

    Found this fish tail yesterday, and was wondering if there is enough here for an ID? Thanks
  5. Thought I would share some pics of these specimens I found a few years ago. Found them on the surface after a recent construction dig in the city. From the Eagle Ford Group, 90 mya.
  6. Hash Concretion

    This is from a Formation in the Eagle Ford Group of Denton County, Texas. It's only 2" X 1½" but it has a lot of fossils in that small space. I will do or get done a little more prep to make sure there isn't anything else in there but I'll keep it all attached. I think the brownish-red matrix is sandstone and it's pretty thick so I think it will hold together fine. Very little was showing when I found it. The close-ups are clockwise to the center.
  7. Not sure what this is ???

    Found the following yesterday while out gathering some gravel in Post Oak Creek. I know its not million of years old but it looks quite a bit older than I am. Any idea what this may be? Thanks in advance David
  8. New Ptychodus for the collection

    Going through a bucket I brought home last night I found this nice little Ptychodus tooth. Looks like P. mammillaris?
  9. I found this crystalline calcite replacement fossil mold after breaking open the width of a 2" to 3" thick Eagle Ford limestone layer loose fragment. The rock broke along the circular arc of the fossil mold. The mold is somewhat mushroom shaped with a small inoceramus clam attached to the side. It is about 4.25" wide. A full circular arc might be more than 6 inches in diameter. The mold appears to be fragmented and hollow on the top of "mushroom shaped" side. The narrower bottom of the mold also flared out a little, but not as much as the top. I think that the thin base layer cutting at 30 degrees to the mold is an oyster shell hash layer that it was deposited with - although at the mold top the hash layer to be unusually smooth faced. Some of the calcite mushroom lip broke out on the other fragment (the 4th photo shows it upside down on the bottom). The lip was not likely to be easily recovered. So, I cut that face of the limestone fragment back from the lip so that the two can fit together where you can still see the concave fossil surface inside. I worked off the convex outer matrix of the mold and the micrite limestone matrix until there was little else left but the mold. The oyster hash (or other) layer and the small inoceramus are also attached. The limestone layers in the outcrop area has some 15mm or less tooth width sized Ptychodus and up to 12 to 20 mm long cutter shark's teeth. There were also two ammonite molds (10" to 12") preserved in similar crystalline manner. There are a few shark verts and fish/ray teeth also. The few Paleontological Society of Austin folks I showed it to at the recent meeting could only see the concave face before I had carved it out more. They would not try to guess its origin. My first inclination was that it is a large vertebrate bone fragment. That might have been just well wishing. A giant inoceramus hinge plate or other large invertebrate (like ammonite or nautiloid) interior mold seems more likely. Any educated guesses? Thanks in advance for your time.
  10. Just found this bone out of the eagle Ford group in north central Texas. 86-90 mya. I'm guessing it's mosasaur or turtle? One end is broken off. 4 inches length. If so can we get a bone ID from it? Limb bone? Thanks for any help.
  11. South Texas fossil could be reptile that swam 90M years ago San Antonio Express-news, January 2, 2017 (Picture of Fossil) http://www.expressnews.com/news/texas/article/South-Texas-fossil-could-be-reptile-that-swam-90M-10830843.php Hike in the Eagle Ford takes geologist back 92 million years (Picture of Fossil) By Ryan Maye Handy, Houston chronicle, December 28, 2016 http://www.houstonchronicle.com/business/article/A-hike-in-the-Eagle-Ford-takes-geologist-back-92-10823601.php Complete reptile fossil ‘important find’ Hamilton Spectator, Waterloo chronicle, January 3, 2016 http://www.waterloochronicle.ca/news-story/7048220-complete-reptile-fossil-important-find-/ Yours, Paul H.
  12. Eagle Ford bone

    Possible to tell what this bone is from? Found in Dallas County.
  13. Texas Tooth

    Found this reptile tooth in Dallas County. What do y'all think it is?
  14. 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 for someone to find. This is the biggest shark tooth by far for me. I felt like a kid on Christmas that just opened his dream present. I believe its Cretodus. Please correct me if I'm wrong. After gathering two 5 gallon buckets worth of gravel, I headed back toward the car and decided to take a breather (10 gallons of wet gravel weights more than 10 gallons of feathers ). While walking around I found the little bottle. I then walked over to another gravel bar and found my first mosasaur vert in the POC. If the POC had the size and quantity of mosasaur verts and teeth that the NSR does, I'd never leave Sherman. Speaking of the NSR, if you haven't been in awhile, you may want to wait. I spent about 6 hours out there this past Thursday and while there is some low lying water in the river and creek beds, all the gravel bars I saw were covered in silt. It's in serious need of a good heavy rain and I'm waiting till then before I go back out. David
  15. Went for a quick hunt this past Sunday and found this gem ('huge' is relative, it's huge in my books). My guess is P. Decurrens? If not, what gives away the correct ID? Thank you! Nicole
  16. What a fun day. I was out of my normal area, waiting on a pizza and got bored. So I checked the map to see if there were any potential creeks in the area for arrowhead hunting. Found an interesting looking spot and headed over after my lunch. I spent around 30 minutes looking when I decided that it wasn't a very good spot. I went back to where I entered the creek and as a stepped out I looked down and saw discs lying all along the shale. I've never seen so many centrums in one spot. Went back to the jeep and got tools. Luckily it was soft shale so I could easily remove them. The more I removed the more I found. All told it came out to 95 total. I never would have spotted them if I hadn't entered the creek at that exact spot. What a crazy hobby. I'll have to go back after the next rain and look for more. Can I assume these all belong to the same fish? Late Cretaceous Eagle Ford Group- 90 mya
  17. It's about 1.5" long and 1" wide at its widest point.
  18. What are these from?

    I am not familiar with those grooves, almost looks like turtle bone. I wont even guess on the other, came up with everything from cow to shark lol. Somebody educate me!
  19. Please id strange little jaw & teeth

    So perplexed by this, there are oval teeth, circular ones, and one that looks human with a filling lol. Can't quite picture the bite, can someone help me out? This is the best my camera will do sorry.
  20. Possible Inoceramus?

    I was wondering if someone familiar with Eagle Ford fossils from the Las Colinas, Texas area could identify this. I think it looks like Inoceramus, but am not sure. For size reference, the graph paper that it is sitting on is 1/4" grid.
  21. Unidentified Eagle Ford Fossil

    Please help me ID this fossil. It is from the Austin, TX Upper Bouldin Flags Member. It is in a zone associated with Ptychodus anonymous. It is about 13 mm diameter at rounded end by 18 mm long - broken.
  22. Post Oak Creek, Texas Oyster

    What is this Cretaceous oyster that I found in Post Oak Creek in Sherman, Texas? Most oysters in the creek come from a yellowish calcite-cemented sandstone from the Arcadia Park Formation of the Eagle Ford Group. It is about 48mm in length.
  23. 1" x 3", top and side view. The back is unremarkable, but I can post more views if needed. Any help is much appreciated, as always.