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  1. Samurai

    Metacoceras sp.

    From the album: Missouri Ammonoids, Nautiloids and Gastropods

    Found this beautiful specimen the other day while searching in the rock pile attributed to the Iola Formation. More specifically, this one was most likely found in the Paola limestone member.
  2. Collector9658

    Mooreoceras nautiloid cephalopod

    From the album: Pennsylvanian fossils

    Phylum: Mollusca Class: Cephalopoda Order: Orthocerida Family: Pseudorthoceratidae Genus: Mooreoceras
  3. I’ve been air scribing this piece out and I figured it was a Mooreoceras. However, the ridge going up the front is something I haven’t seen on this species. Is it just squashed a bit? It’s a pointed oval in shape. The length is nearly 3 inches.
  4. Jo N

    Is this a Cephalopod?

    Hello from Southern Ontario. Fossil newbie. Multiple fossils are being uncovered when fencing an old hay field. Thank you in advance.
  5. Hi all! At last Friday’s Dry Dredgers meeting, I handed over the two Ordovician fossils below to Dr. Carl Brett for the Cincinnati Museum Center! Standard business card for scale. This coral, which I have wrongly been identifying as Favosites sp., is from the campus of Hanover College in Indiana, in their Dr. Daryl Karns trail system. This was donated with permission from the Hanover College Geology Faculty. This Treptoceras sp. comes from the US-68 road cut in Maysville, KY, Kope Formation.
  6. TxHeart

    Fossil ID wanted

    This was found by the Denison Dam, Denison TX. What is it?
  7. Members of the Fossil Forum have been very helpful with previous submissions. I would appreciate comments/suggestions concerning some nautiloid cephalopod fossils that I have. Image 1 is typical of the Ordovician nautiloid cephalopod fossils found in the Cincinnatian region. Given the bryozoan encrustations, it clearly remained on the sediment surface for a period of time. One source suggests that you can only identify the species by slicing them lengthwise and examining the siphuncle; is this true? Images 2a and 2b are images of a significantly larger Ordovician nautiloid cephalopod that I have tentatively identified as a Cameroceras both due to its larger size and the very large siphuncle illustrated in Image 2b. Image 3 is also of a larger nautiloid cephalopod that appears to be a mold. If one assumes that the piece on the right side is part of the same fossil then it displays a quite small diameter siphuncle. The fossil in Image 3 does however appear to contain part of the living chamber. Lastly, Image 4 is of a nice endoceras Ordovician cephalopod from Ontario. This fossil appears to have been buried in fine grain sediments so it may very well have perished from suffocation during a sediment resuspension event. There does appear to be a layer on the surface. This brings me to the question: Did paleozoic cephalopod shells have a skin?
  8. wildwod

    NW Ireland fossil id

    Fossil I haven't seen before here - just wondering if anyone could ID it. Looked through various Irish fossil pages but couldn't find anything to match except possibly orthocone?
  9. CCoelho

    Unknown ID - ammonite?

    I found this fossil in my garden a few years ago. Always wondered more about it and really have no idea about this kind of thing. I find it fascinating seeing the different layers. Does anyone have any information on this kind of fossil? Found near Northampton, England.
  10. Hiked up to some Devonian Foreknobs Formation exposures yesterday on a mountain in the Jefferson National Forest in Craig County, Virginia. Found some awesome and beautiful ammonoids, cephalopods, and more!!! Now I’ve just gotta find some trilobites and crinoids...lol Some of the better ammonoids I found in some mudstone: Some of the different types of cephalopods along with some brachiopods: And 2 unknowns, not a clue in the world what these are:
  11. Brachio Bill

    Devonian Identification Dilemma

    Recently I have taken interest in fossil hunting after discovering a plethora of fossils from some farmland in Southern Indiana. It is my understanding the fossils are from the Devonian period. My grandsons (5 and 6 years old) and I have collected several specimens I’ve the last couple of months. I have been searching the Internet for weeks trying to correctly identify our finds and just when I think I have something identified —I find other possibilities. I would like to make displays for the grandkids and label our other collections appropriately. I am in hopes this community would help identify the specimens, and provide advice on how best to label the fossils. I appreciate any assistance that can be provided. Thanks. —Bill Shingleton PS: All the fossils depicted are from Jeffersonville, IN.
  12. Tidgy's Dad

    Adam's Early / Lower Devonian

    The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these groups are extinct or severely reduced in importance and brachiopods never quite recover. Also, the Devonian is the last time we see trilobites with such variation, large sizes and numbers and orthocerids too are much more uncommon after the rise of the goniatites. The massive tabulate coral reefs also disappear after the Devonian. Fascinating period and I hope to share some of its wonders with you. Equally, a lot of this is rather new to me, so I would be very grateful for any assistance, corrections or further information on my specimens. Thank you. The Early Devonian epoch is split into three stages, so let's start with the first of those, the Lochkovian, that began about 419 mya and finished roughly 411 mya. I have been sent a nice selection of brachiopods from the Kalkberg Formation, Helderberg Group by the Mighty @Misha, mostly. But the kind gentleperson also sent me this fascinating little bryozoan hash : It is dominated by fenestellids, which is usually the case in the Devonian, but other orders sill occur. These ones, I think, are Fenestella, but there are so many species in the formation that I wont take a guess as to species : Not sure what this one is ;
  13. So as you know I am usually a vertebrate person, but brachiopods and Cephalopod fossils are my favorite invertebrates. Show me some of your favorites in your collection
  14. I’ve been trying to ID this huge cephalopod I found from the Glenshaw Formation in Brooke County, West Virginia. So far, I’ve considered the following: Millkoninckioceras Kummel, 1963 Mahoningoceras Murphy, 1974 I was all in on the latter name until I noticed the sutures were fairly straight compared to the deep convex flank sutures. Whitney (1882) called the sutures deeply concave on the holotype of Mahoningoceras (original description in photos below). The umbilicus is open. The specimen appears to be flattened. I believe the ventrolateral shoulder is about the middle of the bottom whorl in the second photo with a scale. The largest coiled nautaloid I've found in this formation could fit within the center whorl of this specimen. It seems that the body chamber would add another 1/4 whorl length. With metric scale: Coated with paraloid:
  15. CrinoidConnoisseur

    Cephalopod Fossil or Just a Rock?

    Hi everyone! I was in SE Minnesota recently, looking through limestone outcrops where I have found cephalopods on a previous trip to Mystery Caves, MN. While looking for more cephalopods during my most recent trip to Fillmore County (and finding a few) I found this piece shown below. The fossil is likely Ordovician aged, as is common in SE Minnesota. The formation I am less sure about, but if I had to make a good scientific guess, it is the Galena formation. My question is if this is a cephalopod fossil that is just heavily eroded, of is this just a cool rock? I decided to also flip the fossil with my hand to better see the ends. Thanks for the help everyone.
  16. connorp

    Illinois Silurian Cephalopod

    I'm looking for some help IDing this cephalopod fossil I collected from the Silurian (Racine Dolomite) of northern Illinois. The specimen is just a slice of the entire cephalopod unfortunately, so maybe it will be tough to ID. Any help either way is appreciated. @aek Come across anything like this before?
  17. SilurianSalamander

    Agatized/silicified cephalopods?

    Are these cephalopods in chert? They appear to be agatized as well. The first two pictures are from a chunk of chert and agate that I split to find what looks like the chambers of a nautiloid cephalopod. Is this a fossil or just some way silica forms? Thanks so much!
  18. Disappointed, I did not find a whole trilobite today after work. But I found loads of partials and what I believe is a large section of isotelus in matrix. In your opinion would it be worth messing with or just leave it where it is? Here are a few photos from today. One good sized cephalopod, you can see part of it inside the matrix to the right of the exposed section.
  19. Microraptorfan

    lebanese cephalopod id

    any idea on the ID of this cephalopod from lebanon?
  20. Two factors were at work here. 1) This is just about the most complete specimen of Isorthoceras sociale that I've ever found. 2) I've been doing some research on contemporary squid chromatophores and photophores. So, I was pre-disposed to think I'd discovered some remarkable soft tissue preservation and was all set to announce the evidence of chromatophores in the Ordovician. And then I learned about bryozoan encrustation. Still pretty cool, though.
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