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  1. Ursula_Peterson

    Weird Thing from Lake Michigan... HELP

    Hello, everyone! This is my first post here (and I actually joined this forum for help with this, though you all seem like a fun bunch and I'd like to stick around). So, I found this thing on a Lake Michigan beach last Thursday (near the Point Betsie Lighthouse). I have never found anything like it, yet it seems so familiar... it's just asymmetrical enough to be throwing my guesses off. It has a little hole and was once hollow, and is now filled with tiny sand-grain-sized crystals. Honestly it reminds me of part of a crab claw, but I have no idea. Please share your knowledge!
  2. I am really puzzled on this new one, I have explored phyllocarids, trilobites, and many others, and can't seem to find a good match for it. I am not absolutely positive it is a fossil though, just the surface texture and way it prepped makes me think it is. It is from the Leighton Fm, which is Silurian, Pridoli. When I first started prepping this, I was under the impression that this was the internal mold of a Chonetes bastini, which is why I started on it. I soon discovered though that it couldn't be from a brachiopod, and now I am stumped on it. The first specimen is completely
  3. Hi guys! I found the attached Silurian and Devonian fish online and would appreciate your opinions on the specimens. The first is a Galeaspid, Polybranchiaspis, from Yunnan, China (43mm in size) and the second is an Osteostracan, Tremataspis schmidti, from the Rootsikula Formation, Island of Oesel, Estonia (28mm and 16mm headshields). They are dated to the Upper Silurian and Lower Devonian respectively. From some research it looks like the Tremataspis is genuine, however I’m not 100% on the Polybranchiaspis. Any input in terms of their authenticity would be greatly app
  4. Tidgy's Dad

    ADAM'S SILURIAN

    Hoooooooooooorrrrrrrrrrrraaaaaaayyyyyyyyyyy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Here we are at last, into Adam's Silurian. Thanks for looking. First up is the Lower Silurian or Llandovery and I begin with a problem. I posted this one incorrectly in Adam's Ordovician as it had got it's label muddled up with an Ordovician Favosites I had that has vanished in the move here, but is being replaced by kind forum member @Herb Anyway, this, I remember now I've found the correct label, is from the greenish Browgill Formation, part of the Stockdale Group from a cutting near Skelg
  5. I would like to use photographs of fossils as part of my digital artwork. I do not want to violate any copyright laws if I later sell the artwork. Does anyone know where I can find free-use images of fossils or does anyone mind sharing their personal fossil photographs with me? I will give credit to you for your photography if I decide to use the images in my work. Fossils of any type and from any time period are appreciated. Thank you!
  6. Rock-Guy-17

    More unknown Devonian/WNY fossils

    Hello again, I have some more photographs of fossil specimens that I am unsure about or looking to confirm. Appreciate the help. 1. Devonian, Genesee Formation from around Dansville, NY. Agonatite? Gastropod? 2. Also Devonian, Onondaga Formation I believe, Erie Co.. I am not great at trace classification ID beyond that it looks to be a trace burrow 3. Devonian Moscow Fm., Erie Co. The little fossils on the left side of image? Can't find any sources on these. Neat trilobite eye in the rock. 4. Rugose Coral, Devonian Livingston
  7. Pleuromya

    Silurian Trilobites

    Hi, I have recently visited Wren's Nest, Dudley and I spotted this trilobite just as I was leaving. Could it be the trilobite Dalmanites? Another common trilobite from the area is Calymene blumenbachii, although it has a small spine, so I don't think it could be that. There's a few brachiopods surrounding it, I believe one is Leptaena? There's also this smaller one in the middle of this photo, is it a trilobite? It's 5mm across. All are from the Silurian. Thank you
  8. I found this piece by "popping" one of the "dishes" on a slab at Lang's Quarry in Ilion, NY several years ago. In this case, there is a bivalve-like fossil which was suggested to me was a cephalopod. Does anyone know the species of this fossil? I'd really like to learn more about it.
  9. Mainefossils

    Leighton Formation Conodont?

    So, I have just found this highly-suspect fossil - my guess is a conodont. I saw it as I was examining pieces of shale, and thought it was worth looking at under the microscope. It seems to have the diagnostic features, even the transition of colors between the blue base and white tips. I was hoping for some of your options on it. If this is a conodont, it would be the first from this formation. My guess would be a Ozarkadina sp - it is a very common Silurian conodont here, and some of the elements look remarkably similar to my specimen. This specimen came from the very fossilifer
  10. I'm currently working on a simulation of extinct biomes, i'm slowly learning how to make everything as realistic as possible for realtime 3d simulation. I would like to start with plants recreated from some Silurian, lower devonian and upper devonian, and slowly working to recreating the biomes in the areas where they lived and later i'l like to add animals aswell. All my research is made with google i'm not a professional in archeology or 3d art, some of the models are very simple and unpolished for now and will be updated. The project is in the early stages
  11. Mainefossils

    Coprolite?

    I have just found this little coprolite? yesterday. This is the second time a coprolite-like fossil has turned up in the shale from the Leighton Fm. I am not really sure on this one, though, due to the presence of crinoid stems. The fossil(s) are from the Leighton Formation, Maine; which is Pridoli, Silurian. The main reason I think it is a coprolite is because of its situation in the shale. The rest of the shale around it is relatively uniform, with no fossils whatsoever. The fossils present in it are one crinoid stem, quite a few ostracods, a very small Orbiculoidea brachiopod,
  12. Mainefossils

    Phyllocarid valve?

    This morning I split this shale (technically it fell apart on me), and found this interesting little fossil. I was thinking that there was a possibility of it being a phyllocarid valve, but I have never seen one. This also raises a question that I have been wondering - how do you differentiate between a phyllocarid and a bivalve valve when the tail is absent? What raised my suspicions on this specimen are the raised bumps on the external mold and the depressions on the cast. The pictures below are of the specimen. The first shows the cast/internal mold, and the second the externa
  13. Praefectus

    REMPC-BR0006, BR0008

    From the album: Prae's Collection (REMPC)

    REMPC-BR0006, BR0008 Brachiopods - Indeterminate species Silurian Waldron Shale St. Paul, Indiana, USA
  14. Again, here is another invertebrate I have not been able to identify. Either way, my original guess was a trilobite pygidium, until I reviewed the fossil under different lighting, and then saw that it matched no known trilobites from this formation. So I am at a loss here. It is Pridoli, Silurian. For anyone who is interested, this came from a recent excursion to the Leighton Formation. It was found in a layer that contained only Chonetes bastini brachiopods and a few ostracods - with some possible fish bits. In the pictures below, the fossil is shown und
  15. Mainefossils

    Gastropod ID

    So, I have been preparing this nice little gastropod. I have seen five other specimens that shared the same characteristics, but, unfortunately, some of them did not make it. Before I continued to prep this one, I was wondering if it is possible to roughly ID this gastropod. It would greatly facilitate prep work to have a good idea of its shape. All the specimens I have seen have had three whorls. The upper two whorl's ridges are almost absent, this has been consistent through all my specimens. The shape of the shell is coeloconoid. It was found in the Leighton Formati
  16. Mainefossils

    Rhynchotrema sp?

    I am unsure on the identification of this brachiopod. It is from the Leighton Formation, Maine; which is Silurian, Pridoli. According to Maine's Paleozoic Record (an excellent book that lists all the fauna and flora found in formations across Maine), there are only two Rhynchonellid genera in this formation, Camarotoechia and Rhynchotrema. It does not look like a Camarotoechia, but I cannot find many references for the internal mold of Rhynchotrema brachiopods. I would appreciate any references you have on this genus, as well as any advice on the identification of it (@Tidgy's Dad
  17. Mainefossils

    Camarotoechia brachiopod

    I finished prepping this specimen recently, an unidentified Camarotoechia brachiopod. It exhibits an uncommon/rare orange coloration; only about 1/100 of Camarotoechia brachiopods show it. This one, though, unfortunately has some compression damage on the right side, and some of the ridges have pieces missing. The pictures below first show the pre-prep photo (which I finally remembered to take), and the post-prep. Thanks everyone for reading!
  18. aek

    Is this a ostracod?

    This measures just under 1mm. Ostracod?
  19. Mainefossils

    Platyceras sp.

    I have a nice little gastropod in my collection, from my most recent trip to the Leighton formation. I am pretty certain that this is a Platyceras sp, such as the one shown in the plate below, figures 23 - 24. Boucot, A. J., Yochelson, E. L. (1966) Paleozoic Gastropoda from the Moose River Synclinorium, Northern Maine. Geological Survey Professional Paper, 503(A). https://pubs.usgs.gov/pp/0503a/report.pdf I do not believe that specimens such as these have been assigned to species as of yet, and would greatly appreciate to hear any
  20. Mainefossils

    Brachiopod id

    This is another fossil from the Silurian Leighton Fm, Maine. It is an excellently preserved internal and external mold of a brachiopod. It is similar to the Salopina species that I am constantly finding in this formation, but this brachiopod's valve is more strongly curved, instead of almost flat. It also has less numerous striae, and they almost reach the median process. As well as this, the dental plate is thinner and curves inward more strongly, and the ctenophoridium is wider. Any help on its identification would be greatly appreciated. Here are some pictures of it (internal mold on the le
  21. I have just found this microfossil. It is unfortunately incomplete, but the general shape is still discernible. I have two ideas for this specimen, a fish scale or an inarticulate brachiopod. Of these possibilities, I think that inarticulate brachiopod is more probable. The shape, "growth rings", and slight depression in the top lead me to this conclusion. On the other hand, its size, color, and the absence of such brachiopods from this formation, lead me towards fish scale. I am uncertain on both, and could use some help with this one. The specimen is the from the Leighton Formati
  22. I had the opportunity to visit another Silurian site in the northern Georgia/southern Tennessee area. This is now the third such site I've visited, but the first in the Rockwood Formation as opposed to the Red Mountain Formation. As far as I can tell there's very little different between the two lithologically and paleontologically, with the Rockwood and Red Mountain occupying pretty much the same stratigraphic position. The difference seems to be that the TGS prefers to use the term "Rockwood" to describe it's Niagaran Silurian system and the GGS and AGS prefer the term "Red Mountain", mostly
  23. aek

    Local Railcut

    Went out to a railcut that slices through upper Racine formation. This locality is only 10 minutes from my house. I almost never visit it because of scarcity of fossils, however I was reading a paper that mentioned forams in chert and decided to take another look. Here you can see the beds dipping gently to the east. This is interreef strata. Closeby is/was a huge reef, now filled with garbage. Here is a chert nodule to be sliced up. Also, found a silicified coral and packed in my bag. Disturbed this guys slumber. Silicified Favosites
  24. Ludwigia

    Eurypterus lacustris.

    From the album: Sketches

    The original comes from the Late Silurian Pridolian Bertie Group Williamsville 'A' deposit at Ridgemount quarry near Fort Erie, On., Canada.
  25. RickCalif

    Morocco crinoid

    From the album: Morroco Fossils

    Scyphocrinites elegans crinoid Upper Silurian 420 Million Years old Boutschrafin, Erfoud, Morocco
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