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  2. Bands in Marine Mammal teeth

    Jack, are the dolphin teeth on your side of the States usually that big? It seems like it might be a small cetacean of sorts but way bigger than the dolphins I am accustomed to here. You want to talk about banding, check this one I got early Summer.
  3. Marine invertebrates Greece Attica any ID ?

    Sponges are indeed a possibility. But I am not sure and have no other idea. Marine worms are not very probable. Whats the size of the specimens and tubes, @laiosx? Franz Bernhard
  4. A nice Fall day in the Sacramento Mountains

    I'd say you're looking at some ichnofossils there, rather than crinoids. .
  5. Help identifying poss fossil..coral? Texas

    Thank you! Looking into the geologic possibilities
  6. Above the previously mentioned sandstone formation was a small layer of sandstone that appeared to be somewhat altered by an igneous layer of Camptonite above it. This small piece of shale yielded a small fossil I need to research. The shale is so hard I can't reveal anymore of the item. At first I thought it might be a seed pod but am not committed to that. It is about 0.5" at the longest revealed dimension (1.5mm) Some distance away in a limestone formation I found this geologic oddity. It appears to be a mish-mash of items of which I am not even certain if what I first thought was crinoids is indeed crinoids as the columnals would be unlike any I've seen before. Here is a closer view of the 3 possible crinoid columns at the top of the previous picture. I neglected to actually measure the longest one but, by recollection, believe it was about 7" long (18mm). Regardless, if nothing special, it was fun to find and admire.

    This old thread might be useful as well :
  8. Help identifying poss fossil..coral? Texas

    Welcome to the Forum. Maybe calcite veins in sandstone or limestone? It has some resemblance to desert rose gypsum crystals. Neat looking piece.
  9. Hell Creek Fish (?) Jaw Section

    Ha! I was about to post a link to a February post of yours, Frank, of a Parasaniwa in your collection. Thanks for the new photos. I also found this link from the Smithsonian.
  10. Marine invertebrates Greece Attica any ID ?

    These look like sponges, to me. Wait for some other opinions, though. @FranzBernhard @TqB
  11. Help identifying poss fossil..coral? Texas

    Looks geologic.
  12. I decided to get out for what might have been the last warm day in the 70's (Farenheit) for a walkabout to explore high country access and exit points for some long climbs I would like to do this winter. For this trip I rucked primarily in the lower Pennsylvanian formations looking specifically for a new occurrence of mineral rich shale formations similar to one I had found last year that yielded plant fossils. I did manage to find a small but new-to-me location that was very geologically complex having anomalies in the midst of the shale/sandstone formations. First this Cordaite about 5" tall (12.5 mm) Quite near were numerous Liesegang specimens. This one about 2" x 2" (5mm x 5mm) There seemed to be at least two small areas where hot gasses may have vented through the field leaving small seams of quartz-like material. In one location samples present as Bornite. The largest piece below is 3" x 6" (7.5mm x 15.5mm) The other area was just at the contact zone between the shale having plant fossils and sandstone having plant fossils. This specimen seems to have mostly converted the sandstone and permineralized material into quartz. There is a small specimen of permineralized material left in the lower right corner. Also, there is some mineralization which I believe is mostly iron. As this new location is about 4.5 miles from where I parked my vehicle I did not collect many specimens (small pack) but plan to go back and spend more time searching.
  13. Crocodile Teeth?

    Can you take additional photos of base and other side. Not sure it's a tooth
  14. Hell Creek Fish (?) Jaw Section

    Varanid from HC. Parasaniwa
  15. Need help identifing what is wrapped around fossil

    Quite certain of the diagnosis on this. These actually can have value both to collectors and researchers. At the very least you could trade them for things you like. More importantly, if you collect enough, you will start to get a nice picture of the local copro-fauna. Also, as you get a collection going, you will likely run across some that have inclusions or bite marks. These are very valuable to researchers. If you decide to start picking them up, I'd be happy to give you feedback on what you are finding.
  16. This looks very nice! Great display piece
  17. Hell Creek Fish (?) Jaw Section

    Lizard. A varanid such as Parasaniwa. That is my somewhat educated guess.
  18. White River Oligocene Prep - Leptictis

    Me too... another retirement project. (Tim mentions Tate '97 because I wrote a paper on Lepticitis for this conference... well before I got this job at the Tate).
  19. Today
  20. Help identifying poss fossil..coral? Texas

    My boss has a collection of fossils picked out of the Brazos river, TX. Most of his are pet wood/plant but this one perked my interest.
  21. Crocodile Teeth?

    Lower left in the picture is Kansajsuchus, forgot to add that with the above image but I'm not sure you can distinguish between isolated Alligatoroid teeth, this species and the other Crocodyliforms in that fauna
  22. ID on fossil tracks

    My instinct was toward plant. Sphenophytes are good at this sort of habitat too I believe.
  23. Lepticits

  24. Any idea of the type of this marine invertebrate ? Most probably marine worms and Pleistocenic but any sugestion welcome.

    I can’t contribute to this thread, but I wanted to thank all who have. I haven’t studied much on Ammonites/Nautiloids yet and this thread has piqued my interest. I’m learning from here and elsewhere . Any day I can learn something new is a good one. Thanks for making my day a little brighter!
  26. Bands in Marine Mammal teeth

    I recently found a distressed canine in the Peace River. When possible I really want to identify all such fossil canines. The length is 1 and 1/8 inch. At the river I seemed to see (photo #1 & #2) "latitudinal banding" which means marine mammal. At home, I note that the root end turns to the side of the canine (photos #3 & #4), a characteristic that I mostly associate with porpoise. So , what is my question: Do all Dolphin/Porpoise teeth have such banding? The only reason I do not detect it on 95% of my Florida Dolphin/Porposie fossil teeth is that the banding is covered by cementum. I appreciate all responses, Jack Here is a picture of Whale tooth composition. These are Peace River or Bone Valley Whale Teeth:
  27. Need help identifing what is wrapped around fossil

    Same here. As best I can tell, hair and feathers are common inclusions and don't break down in the croc gut the way bone and teeth do.
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