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  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

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  1. Mainefossils

    Tentaculites vs nautiloid id

    This is a another specimen from the Leighton Fm, Maine, Silurian. I uncovered it a while ago, and at first thought that it was a crinoid stem. On second look, though, I realized that the segments on the "stem" were curving inwards, instead of outwards. Furthermore, what I first that was the stem fading into the rock was actually the width and depth decreasing. I am torn between a Tentaculites sp., which is not known specifically from this formation but shows superficial resemblance to this specimen; and a small orthocone nautiloid, which is known from this formation. Any help on its id would b
  2. Mainefossils

    Orthocone nautiloid ID

    This is my first almost complete internal mold of an orthocone nautiloid. It is from the Leighton Fm, Maine. From the little I can see of the external mold, I believe it to have the same grooves as in the Possible Fossil Coral post, but I am unsure. Help on the general id of it would be greatly appreciated. Here are some pictures of it:
  3. Mainefossils

    Actinopteria bella

    Actinopteria bella is a species of bivalve found in the Leighton/Pembroke Fm, and first described by Henry S. Williams. It is differentiated from A. fornicata by less convexity in its shell and a wider beak. It is differentiated from A. dispar by its shorter shell. The above pictures are of the left valve. A poorly preserved original or cast of the shell exterior is on the left side. Some of the exterior of the shell may be missing since the exterior ribs have less than normal height. The right photo is an exterior impression or mold. Some of the shell may be present on
  4. Hello TFF, I purchased this relatively inexpensive specimen at Mineralfest this past fall, and I was wondering if anyone could tell me more about it. The seller informed me it could possibly be from Madagascar, but was transparent in admitting that she couldn't confirm for sure. It was with other pieces of petrified wood that were brown, but I was drawn to this one due to the red hues. I think it's agatized, and it looks "glassy," although there are too many impurities to shine a cell phone light through it. One side is polished, and I put water on the rougher backside to show mor
  5. Mainefossils

    Gnathasome fish scales

    Fossil forum, I have just finished uncovering a gnathasome fish scale. It is from the Leighton Fm, Maine. I believe it to be in the genus Gomphoncus, maybe even Gomphoncus sandelenis, which was described as being in the Eastport Formation (https://www.erudit.org/fr/revues/ageo/2018-v54-ageo04224/1055415ar.pdf). I am unsure of this id though, mainly because of the pit in the largest end of the scale. It is approximately 200 microns long by 250 microns wide by 200 microns deep. Any help on the id of the genus, or maybe even the species, would be greatly appreciated. Here are some pictures
  6. Mainefossils

    Conodont element?

    Fossil forum, I just uncovered this possible fossil. It is from the Leighton Fm. To be honest, I am not sure it is actually a fossil, but I wanted to check. I was thinking that it could be a conodont element, but am unsure. Any help on its id would be helpful. Here are some pictures of it:
  7. Mainefossils

    Rhychonellida brachiopod id

    Fossil forum, This is another brachiopod from the Leighton Fm. It is a rhychonellid, but I am unable to identify it to the genus. I originally thought it was Rhychonella, but I see problems with this id. Any help would be appreciated. Here are some pictures of it (1-4 are internal molds, 5 is a separate specimen same species external mold) :
  8. Mainefossils

    Unknown fossil

    Fossil forum, I recently found an interesting fossil. I was thinking coral or bryozoan, but was unable to identify it correctly. It is from the Leighton Fm Maine (again), which is Silurian. Any help would be greatly appreciated. Here are some pictures of it:
  9. Mainefossils

    Brachiopod ID

    Fossil Forum, I recently found multiple brachiopods that I believe are in the genus Salopina, moved from Orthis, and of the same species. I found them in the Leighton Fm, Maine, which is Silurian. I was wondering if anyone could tell me what the species was, and also if anyone had any literature on this genus. Here are some pictures of them (internal molds are on the left, external on the right):
  10. Mainefossils

    Invertebrate fossil

    Fossil forum, I recently found an interesting fossil. I have not come across anything like it before, and was wondering if you could help me identify it. It is from the Leighton formation, in Maine. Here are some pictures of it.
  11. Mainefossils

    Ostracod ID

    Fossil Forum, I recently found a single ostracod in a fossiliferous rock I collected from the Leighton Fm. The formation is Silurian. I was thinking there was a possibility that it was Zygobeyrichia devonica, which I saw mentioned as being in the Chapman Sandstone at this website https://pubs.usgs.gov/pp/0089/report.pdf, but the valves did not match, and the formation was not Silurian. Here are some pictures of it:
  12. RooBug

    Hell Creek Fossil ID Help

    Hello all, it's been a very long time and I'm posting from my phone in an area with no wifi, so I hope I've followed all the rules as best I can. I was out fossil hunting in the Upper Hell Creek in eastern Montana last year, and found this bone. (Sorry for the images, I will not be able to retake them for months.) It was found in a sandy mudstone and appears to be hollow (and very crumbly). Its about 10 inches long.My best guess is a Struthiomimus femur, but if anyone knows different please let me know. Thank you for any help you can give!
  13. MrMcNick

    Fossil ID: Possible Tooth?

    Hello, Went to Big Brook Preserve in Colts Neck, NJ yesterday and pulled this interesting piece out of the silt approximately 12 inches deep. The overall appearance all appearance is the tannish cracked surface of somewhat varying thickness over an orange colored core. The end comes to a point of what would appear to be a tooth. Dimensions: Length: 1.92" (48.768mm) Max Diameter: Approx. 0.59" (14.98mm) Tip Diameter: Approx. 0.225" (5.715mm) Orange Core Diameter: Approx. 0.5" (12.7mm) This very well could possibly be not
  14. Dear Experts and Collectors- I am new to your group and I have limited experience with fossils. I have a large number of fossils I have inherited recently and am trying to get identification of the fossils- I have been advised that most of these are from South America. Can someone help with identification and other relevant information? I can also send additional photos if needed. The coin in the photos measures 1.5cm in diameter for scale. This is just a small sampling of the larger collection and I thought I could start with these. Thanks,
  15. Jacobloven

    Fossil ID - Dentures and vertebrae

    Hello fellow enthusiasts. I just came across two items from a friend who’s parents came to Europe from China in the 80s. Apparently they gave away a bunch more as random gifts to friends and colleagues :). The first one seems to be dentures of some sort and the other one a vertebrae but I have no clue from which species. Do you have any ideas what these might be?
  16. mchiovitti

    Fossil ID: Mahoning County Ohio

    Hello, I came across this while collecting some rocks to test. I did not take it for a fossil at first, but I am at a loss concerning what could have formed the pattern of the rock. The raised lines which I can only describe as “veiny” are really well defined and contoured. The dimensions are 4cm x 1.75cm x .75cm. I believe the rock is shale and it was found in Northern Mahoning County near Youngstown, Ohio alongside a river. The geologic map suggest that the rocks in the area may be from the Pennsylvanian period. Any help you guys can offer would be appreciated.
  17. New way to identify that coprolite as long as you can get some DNA out of it. Can tell difference between dog and human. https://phys.org/news/2020-04-feces-coproid-reliably-sources-ancient.html
  18. robbins77

    Fossil ID?

    Hi I found this thing that looks like a vertebrae. Was found on the beach. Is quite heavy.
  19. Can anyone identify these structures protruding from the top and bottom of the fish?
  20. Montana Moss Picker

    Is this fossilized tree bark? Help please

    Need help identifying what I'm guessing is Fossilized tree bark I found On banks of Yellowstone River. Erosion this year is nuts. More just this spring than I've seen in 33 years of Spring flood erosion.
  21. Hello, I hardly know anything about fossil identification but was given these fossils a while back and thought I ought to know what they actually are. They look fairly common and from research, they look most like an ammonite and a fish fossil maybe but I'm not sure. Any help would be much appreciated and pictures of both fossils are attached. Thanks, Harry
  22. CHalifax

    Is this a fossil bone?

    Hello I was wondering if anyone could identify this fragment, which I think might be a fragment of bone, but am unsure. I don't have a lot of knowledge when it comes to identifying Pleistocene fossils.
  23. Hello all, I have been a long time lurker and decided to finally have a voice. I am a long time rock lover, and unfortunately am in the beginning stages of trying to learn everything I forgot as a child, ie. I am happy to take constructive criticism. I have been traipsing through muddy creeks and cut roads looking for rocks that are interesting. I happened across the embedded rock a week ago and I don't know where to begin in the identification process. The picture attracted is on a slope that leads to a creek in Richland Hills, TX, just east of Fort Worth. I assume the city c
  24. Joe Salande

    What could this be.

    While fossil hunting at the foothills of the Appalachian Mountains in North Carolina, I came across this critter. I don't think it's a Crinoid, as the little groves and very tiny, even compared to some small Crinoids that I found. I'm thinking of some sort of Centipede type creature, but have no Idea. Any thoughts or help would be greatly appreciated. I was tickled to find something a tiny bit different. Thanks in advance Joe
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