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Found 212 results

  1. Ordovician Road Cut

    Yesterday, I was lucky enough to attend a very special field trip with the Eastern Ontario Natural History Society to a massive road cut in Ontario. The rock exposed was Ordovician aged limestone, and it produced some amazing fossils. I might need some id help with some of these. The giant cephalopod was by far the best thing I found! 1. Giant Cephalopod (with hand for scale) Camerocerad or Endoceras? 2. Crinoid stems, bryozoans and Gastropod 3. Partial trilobite pygidia
  2. Excursion/Field guide/IOWA

    here(lessthan 5 Mb) The Cedar Valley/Lime Creek piece by some noted experts would seem to steal the show. Fig 3, with its correlation chart. (useful inclusion of a Vail Transgressive/Regressive cycle chart!!!!) Figure gets better and more useful each time I look at it.
  3. Splitting Nodules And Concretions

    Hello TFF members! I have just found several strange circular rocks on a fossil hunt a few minutes ago, which I believe to be either nodules or concretions. What should I do to split these rocks? I know that I should probably not try to break them with a hammer and chisel, and instead use the freeze-thaw process. This is my first experience with nodules or concretions, so I am not very knowledgeable on this topic. Is there a specific recommended length of time I should leave them in the cold? How long should I thaw them for? How many times should I put them through the process before seeing cracks? How cold should the environment be for the freezing to work? If they are in fact nodules or concretions, I will post pictures of my finds (or lack thereof)!
  4. Agnostid?

    I found this fossil a few days ago at an exposure of the Billings Shale. It was found associated with Triarthrus glabellas and brachiopods. It's structure leads me to believe that it's either an Isotelus pygidium or an agnostid, although I do not know of any agnostics described in this formation and age.
  5. Anthology Of Unidentified Fossils

    Hi again! This will probably be my last ID post for a while. This time, I've decided to put all of the Unidentified fossils in one post. These are all from the Ordovician aged Billings Shale. Help identifying these will be much appreciated! 1. Leaf-shaped imprint. Mineral inclusion? 2. Trilobite fragment? 3. Dark markings and furrows. Burrows?
  6. Hello TTF! This post will contain the pictures of my science fair board, as well as the awards I received from it. Sorry for the delay, I know that some members posted requests for these months ago, but I have been busy with other things lately. I actually left part of the board at school by accident for weeks. I hope the pictures are clear enough!
  7. Repairing Fossils In Shale

    Recently, I have been out fossil hunting more often than usual, and many of them have since been damaged. Some were broken during transportation, and others were broken as I excavated them. The fossils are all from the black Billings Shale, which fractures easily. Is there any way that I can repair them without leaving any obvious markings?
  8. Unknown fossil

    Hi there! This spring I started collecting fossils, and I found this one in rock-glen park down in Arkona. Any ideas what it is? I'm looking for recommendations on where to go next - hungry hollow is apparently only open to groups but I've heard its a great place. Any others in the area?
  9. Bit parts

    nowaklethd_arthropodan_microfossils_f.pdf about 3,8 Mb
  10. Triarthrus?

    Hi TFF! I have just found a very interesting fossil near my home which I suspect might be the articulated left and right pleura of a Triarthrus. I have already found other fragments of Triarthrus in the same rock outcrop. (Glabellas, pleura, cephalons, etc.) It may also be a graptolite or something similar.
  11. Orthocone or Hyolithid?

    Another fossil for ID! This time, I think that I have some possible orthocone nautiloids from the Billings Shale. I found these near a small construction site near my house. Although I suspect them to be cephalopods, they may also be Hylothids. Or, they could be something else entirely! I am not an expert on these faunas at the moment, so I may be wrong. Each photo is of a different specimen. Thanks in advance! More posts about the regional science fair are to follow.
  12. Identifying trilobites for a friend

    A friend found a few small tubs of fossils that she hadn't seen in years until she started moving stuff around last week for a possible move. She asked me if I could come over and look at what she found. Most of the specimens don't have a label but some of it is obvious to anyone who's been to shows and had friends who collect fossils as well. I don't specialize in invertebrates or plants but I know an Elrathia from Utah, a Lovenia from Australia, and a Metasequoia from British Columbia when I see them because I have a few of each myself. She has some trilobites that are out of my wheelhouse so I thought I would ask the forum for identifications. The one below is from Morocco and apparently a Devonian form related to Phacops. I forgot to note the dimensions or ask for the photos to have a ruler included but the specimen is about an inch and a half (approx 4cm) as I recall. The second one is also from Morocco. I think that plate has two of the same (Cambrian and related to Paradoxides). The third is also from Morocco and Devonian, I think. Thanks for any info that can be provided especially if you have an idea of the general locality. I have a few more photos to post but have to go now. Jess
  13. Ammonite tease

    I was up in Cloudcroft on an errand and thought I might as well drive a few miles along Forest Service Road 5661, just south of the town. Here, Pennsylvanian sedimentary rocks are exposed along the cuts of the gravel road. You see a lot of pieces of fossils, but so far, anything remotely approaching whole has escaped me. Also, the rock does not seem to fracture in any kind of systematic plane, but rather at random and often right through the center of a fossil, leaving a thin section exposed and not a "half." But the stuff is there. It is frustrating. And then this thing ...
  14. Coral, Sponge or Bryozoan?

    I'm stumped. I've been collecting erratics off the beach along the Delaware Bay for the last six months and I keep coming up with mysteries. This specimen is 1" long. Unfortunately, because it is an erratic, all I can tell you is that rocks of this type wash down from the Appalachians all along the Delaware River and Bay til it reaches the Atlantic Ocean. They are Paleozoic, but I don't know enough of the geology from PA and NJ to narrow it down by rock type to a formation. Can't find a high enough resolution GEO Survey map, either. Other fossils in this type of rock are rugose corals, tabulate corals, bryozoa, and pinhead-sized crinoids, so big possible spread on the time frame. No trilobites yet, unfortunately! I have a small id sheet from the Mahantango Formation and an ID book for the Middle and Upper Devonian of NY, but neither have anything similar. I posted on the FB group and got three people saying it was one of these (yeah, I knew that) but each thought it was a different phylum. Can I get a consensus on phylum, if not a genus here? Can anyone give me links to good reference material for my other mysteries?
  15. This question just crossed my mind today, seemingly without provocation: What are the oldest known coprolites in the fossil record, whether from vertebrates or invertebrates? I know of Paleozoic coprolites, but is there any evidence of coprolites before that, perhaps from the Ediacaran? And if there are no pre-Cambrian coprolites recorded, what are the oldest known from the Paleozoic? I have a feeling that @GeschWhat might know a thing or two about this subject since, after all, she is the official Queen of Poopiness on TFF.
  16. Dear TFF members, As some of you may already know, I have been working on my science fair project concerning the Trilobite Pseudogygites latimarginatus for several months. This science fair project has been awarded a position in the Ottawa Regional Science Fair held at Carleton University this week. Your help has been instrumental in my success, and my appreciation cannot be expressed in words. As one way of thanking you all, I am inviting anyone on the forum who will be in or near Ottawa at the time to attend the fair. My project will be open to the public this Friday, April 6th, from 2:00 pm - 4:00 pm, and again this Saturday, April 7th, from 9:00 am - 11:30 am. It is titled, "The Impact of Environment on the Biodiversity of Pseudogygites latimarginatus." My project's number is 1101. I will also have some of my most prized fossils on display, as well as some edible specimens, for the Trilobite enthusiasts! I am not asking for anyone to go out of their way to see my project, this is just a simple invitation. Everyone is welcome.
  17. Carboniferous Midcontinent

    Concise & clear.What more do you want? algeidcontin143.pdf About 1,5 Mb
  18. Pseudogygites pygidium

    From the album Billings Shale

    A P. latimarginatus pygidium from the Billings formation near St. Laurent, Ottawa.
  19. Pseudogygites pygidium

    From the album Billings Shale

    A partially pyritized P. latimarginatus pygidium from the Billings formation near St. Laurent, Ottawa.
  20. This is my final post for tonight, and then I will stop cluttering up the forum. Unfortunately, this specimen has been badly weathered and so may not be identifiable at all, but the shapes are so intriguing that I can't help but ask. Any thoughts here would be very much appreciated. The two angles are from different sides of the same rock. Sadly, I did not find this specimen myself, and so I do not have any particularly useful information on age or location. It was left in a desk drawer along with a collection of other invertebrate fossils, most (if not all) of which are Paleozoic in age. Here are the pictures. Thank you in advance for your time and input. Side #1: Side #2:
  21. This one has me pretty confused. My initial thought was that it was a nautiloid, but upon closer inspection, I realized that I did not see any sign of chambers, which made me question that ID, so maybe it's a gastropod? I'm not sure how clear this is from the photos, but the spirals are continuous (e.g., they are not stacked disks as I've seen in some nautiloids). Any thoughts here would be very much appreciated. Sadly, I did not find this specimen myself, and so I do not have any particularly useful information on age or location. It was left in a desk drawer along with a collection of other invertebrate fossils, most (if not all) of which are Paleozoic in age. Here are the pictures. Thank you in advance for your time and input.
  22. Gastropod- Clathospira?

    As with my other posts so far, I should preface this post by saying that the Paleozoic, marine ecosystems, and invertebrates are not generally my primary expertise, so I apologize if I am wildly off base or asking stupid questions. Sadly, I did not find this specimen myself, and so I do not have any particularly useful information on age or location. It was left in a desk drawer along with a collection of other invertebrate fossils, most (if not all) of which are Paleozoic in age. Based on some web-surfing, I came up with a possible identification of Clathospira that is probably completely wrong. Here are the pictures. Thank you in advance for your time and input.
  23. Brachiopods

    As with my other posts so far, I should preface this post by saying that the Paleozoic, marine ecosystems, and invertebrates are not generally my primary expertise, so I apologize if I am wildly off base or asking stupid questions. Sadly, I did not find these specimens myself, and so I do not have any particularly useful information on age or location. They were left in a desk drawer along with a collection of other invertebrate fossils, most (if not all) of which are Paleozoic in age. They look to my untrained eye to be the same species of brachiopod, although I have no idea what species that is. Any taxonomic information beyond just "brachiopod" would be awesome. Here are the pictures. While photographing, I kept the specimens in the same order, so the one on the left/right is the same specimen in each picture. Thank you in advance for your time and input.
  24. Orthocone nautiloids

    I should preface this post by saying that the Paleozoic, marine ecosystems, and invertebrates are not generally my primary expertise, so I apologize if I am wildly off base or asking stupid questions. Sadly, I did not find these specimens myself, and so I do not have any particularly useful information on age or location. They were left in a desk drawer along with a collection of other invertebrate fossils, most (if not all) of which are Paleozoic in age. I have several different specimens of orthocone nautiloids, and I would love to know if anyone can refine that identification further. To make the situation more difficult, the siphuncle is only preserved in one of the specimens so far as I can tell (first set of photos below). For this specimen, the diameter of the nautiloid is ~3.5 cm (depending on exactly where it is measured), the inner diameter visible on top and the diameter of the siphuncle on the bottom are 4 mm, and the outer diameter is 8 mm. Here are the pictures. Thank you in advance for your time and input. Specimen #1: Specimen #2:
  25. Rugose Corals

    I should preface this post by saying that the Paleozoic, marine ecosystems, and invertebrates are not generally my primary expertise, so I apologize if I am wildly off base or asking stupid questions. Sadly, I did not find these specimens myself, and so I do not have any particularly useful information on age or location. They were left in a desk drawer along with a collection of other invertebrate fossils, most (if not all) of which are Paleozoic in age. I have several different rugose coral species, and I would love to know if anyone can refine that identification further. I thought the colonial rugose coral might be an Eridophyllum species, but I would not bet much on my identification. The third is truthfully in terrible condition and I doubt there is much to say about it, but I thought I would see. Here are the pictures. Thank you in advance for your time and input. Specimen #1: Specimen #2: Specimen #3:
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