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  2. What is this ammonoid

    Certainly looks like a nautiloid. Spiral specimens are not all that common in the Palaeozoic. Can you please tell us more exactly where in Michigan this was found?
  3. Stratolamia striata?

    I'd say that you're spot on! (though I offer some thoughts about this tooth style in your other post). It would seem that you have quite the mix: uppers, lowers, anteriors and laterals.
  4. Perth/WA hunting trip

    So I went out for the first time and hit an area in the gin gin chalk layer - And I found some stuff!!! From top to bottom: - mollusc shell, sea urchin spine, small ammonite shell and I think a sea worm of some kind? The ammonite came out really well
  5. Ammonite

    Perisphinctes is one possibility, but it could also be a Parkinsonia. Pity you don't know the provenance. That would solve the riddle. You'd need to find someone familiar with the ammonite fauna in French strata and sites if that's the country of origin.
  6. Spanish Point Ireland

    It looks just as identifiable as the concretions I usually pick to break open.
  7. Mystery Shark's teeth

    If these are from the Paleocene Aquia Fm, they're too old to be Carcharias taurus but the tooth on the right does indeed have that standard, striated "sand tiger" look to it for sure, which over time is called Scapanorhynchus sp., Stroiatolamia striata, Striatolamia macrota or C. taurus, depending on the age. In this case, it would be Striatolamia striata**. Re: the tooth on the left, the concavity of the labial root base and more robust blade lend me to believe that it is Jaekelotodus robustus. I posted photos of French and Belgian teeth of this species below. I welcome others' thoughts of course. **Despite insistence by some that there are identifiable morphological differences between these four species, the nuance is lost on me. I honestly believe if you handed a 2 dozen of these teeth to collectors without provenance information, most would be unable to distinguish them, which makes me question the validity of the current nomenclature. I'm apparently not alone: "The genus Striatolamia left a fossil record with teeth that can be easily confused with those from other genera. I find it particularly disconcerting to need to know the stratigraphic position before tendering an opinion as to whether an anterior tooth might be Scapanorhynchus or Striatolamia, or at other times, Carcharias or Striatolamia. The experts may find the subtleties "obvious", but I've never achieved that comfort level". -- Jim Bourdon 1999 (Elasmo.com)
  8. May 2019 - Finds of the Month Entries

    Discovered 2019/05 crab indet Eocene France Provence
  9. Today
  10. Let's see your latest mailbox score!

    I have no idea what that actually means, but it sounds really cheap.
  11. Permian Sponge?

    Very nice indeed. Yes, I also say sponge. Good job.
  12. ESCONI Braceville Shaft Mine Trip 5-18-19

    Sad I missed another one. We are trying to fix up our rental home to sell and it has taken up all my time for the last month. It was very nice of you to donate all that. My kids in the past really loved the dump piles people bring. Hopefully I'll be off work for the September one.
  13. Permian Sponge?

    I will defer to the real experts but I will say that my money is on sponge. It looks right to me - I've got extant sponges that look a lot like that (overall shape). Nice job dissolving it out of the rock, btw.
  14. RB's Fossil Crab Prep Thread !!!

    That guy is coming along nicely. I think the repairs will turn out great. Not that I ever had any doubts.
  15. Pit spoil

    Beautiful finds
  16. Pit spoil

    Thank-you all for your comments. Yes i think your right, the reason i put lycopsid was that it is so small and fine with the (pinnules) in a more closed position made it look different. Cheers John
  17. Mystery Shark's teeth

    I am no expert either and I know C taurus is supposed to occur in that formation but according to the book the cusplets are supposed to be pointy. I guess they could be worn off . . . but just based on the other teeth I have looked at the bumps seem intact to me. Now that you mention it the teeth aren't very pointy anymore - maybe it is wear. Thanks Randy.
  18. Spanish Point Ireland

    Yep. Lepidodendron is found there
  19. Mystery Shark's teeth

    I’m no expert on teeth. But they look a lot like sand tiger (carcharias taurus) to me
  20. Mystery Shark's teeth

    Hello, These are also from our hunt in the Aquia formation of Charles Co. MD. Sharks of the world didn't give me much insight. The only species that I noticed where the enamel extends out on to the roots like this is the extinct goblin shark Anomotodon novus. I definitely have some teeth from that species I think but these are substantially different. These are larger, more robust and the have the cool extended enamel and bumps/cusplets on the shoulders of the labial side. Any thoughts?? (ruler in mm and squares 1/4") Kate
  21. Stratolamia striata?

    Hello, I am new here and new to fossil identification. These are shark teeth from the Aquia formation on the Maryland side of the Potomac. They come from Charles County. I have shark teeth of the world and so my IDs are based on that and the internet. I think all of these are Stratiolamia striata based on the grooves. Ruler is in mm and squares are 1/4" on each side. The last picture with only 2 teeth nearly touching seem different to me in that the striations don't extend very far up onto the teeth (unlike the others where they cover much of the crown. I am not sure if S. macrota also occurs at this site?? They are supposed to have striation only near the root. I have more from this trip but limited time so it will have to dribble out. Thanks for your time, Kate
  22. Oreodont

    I saw in your post you had some breakage wich you glued together. Would you recommend gluing this together before or after prepping? I was planning on afterwards so I’m working with smaller easier sized chunks but then I worry about the broken edges flaking easier. Any suggestions?
  23. Quick trip to my local beach

    I know what you mean, but the stuff around here can be weakened by getting wet, and has to be handled carefully or consolidated somehow, and then there's the green stuff that grows all over anything that sits in the shade and damp for any length of time!
  24. Quick trip to my local beach

    A little rain doesn't do much of anything here. It's the freeze that kills it. We've found many that have been exposed for at least a couple years that the prints are still good as long as they are out of the surf. The carbon is long gone but the print is good. Depends on which layer it comes out of, some are fragile and soft and some are very hard. Collected quite a few from the beach before I took the time and found the main seam.
  25. Permian Sponge?

    I found this about 5 inch long silicified sponge? after dissolving a large piece of the Permian (Leonardian) Fort Apache Limestone from the Schnebly Hill Formation east of Payson, Arizona in four gallons of pool acid. Only about five percent of the fossil was exposed. The outer part is denser than the sometimes nearly hollow interior. One cross section shows two tubular structures with denser edges. No organized patterns suggesting a bryozoa or coral branch are present. Do you think that this is a piece of a branching sponge? @Arizona Chris
  26. Let's see your latest mailbox score!

    I stopped back out there today and they had some curled trilobites about the size of 00- buck for .50 cents apiece.
  27. Let's see your latest mailbox score!

    It worked that time!
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