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Found 229 results

  1. Last year while on a fishing trip in Ithaca, NY I found this as well as some brachiopods in a small outcrop of shale along a stream. I’m pretty sure it’s Devonian in age but I haven’t been able to identify the species.
  2. What kind of cephalopod is this?

    So I found both of these specimens a while back and just assumed it was some sort of cephalopod, but I’m not sure what kind. They were both found in the same area in west Michigan. Any information on these would be really helpful, thank you!
  3. What is This ?

    I found this steinkern in the Maastrichtian, Peedee Form. of SE North Carolina. It is 5 inches long, 2 1/2 inches wide. Any ideas ? Thanks
  4. Ordovician inverts are not my specialty, and thus I have a few that I would appreciate some help narrowing down the species on. The first three are from the Upper Ordovician Platteville Group (Mifflin Member I think). 1) A large cephalopod section. 2) What I think is a bivalve steinkern. Not sure if a species can be ascertained. 3) A tiny trilo pygidium. 4) This last one is from the Upper Ordovician Maquoketa Group. My guess is Eochonetes? Any thoughts @Tidgy's Dad? Thanks for any help.
  5. I was taking pics of my Lake Jacksboro finds and came across what I thought was a regular cephalopod, orthoceras or somesuch, but on closer inspection, it does not have the chambers like all the others. It really looks more like a belemnite, but I am pretty sure those did not exist in the Pennsylvanian era? Correct me if wrong please! I then thought it was an ehinoid spine, but there is a distinct siphuncle opening on the end, (sorry for the pic, was the best I could do). So does anyone know the proper ID for this? Thanks in advance! Measurement is in inches. another small orthocone I found...with obvious chambers
  6. This is the 3rd post of features from a limetone/dolostone rock, found loose in a river, presumably carried south from the limestone bedrock further north. If this is just chert concretion, not a fossil, then Q How did the parallel grooves form? The grooves in this feature had been emclosed in soft chalky dolostone material until I removed it with vinegar baths and much rubbing, so were not caused by weathering and are not glacial striae. And last, this is one of several bonelike features in this rock, that I understand are just chert, but the structure of the end looks bone-like to me. It was seeing these bone-like features sticking out of a normal limestone rock that caused me to soak the rock in several vinegar baths and keeping rubbing and brushing, which exposed all the small features with parallel grooves in this 3-post post.
  7. This is one of several features I uncovered in a limestone/dolostone loose rock in a river. Only the "gingko leaf" end of the worm-like feature was exposed: the "worm" was enclosed in soft chalky dolostone that I removed with vinegar baths and much rubbing - so the "worm" had not been subject to weathering. From the Pivabiska River, 20 km north of Hearst, Northern Ontario, Canada, presumably carried south by glaciers from limestone bedrock farther north. I've been told it is a chert concretion, but could it be a chert-ified fossil? Q: If it's not a fossil and just concretion, how did the parallel grooves form? (The other features have parallel grooves too).
  8. This is one of several features (will be 3 posts) in a limestone/dolostone matrix, from loose rock in a river, presumably carried south by the glaciers from the limestone bedrock further north. Pivabiska River 20 km north of Hearst, Northern Ontario, Canada. These features were INSIDE soft chalky dolostone that I removed with several vinegar baths and much rubbing; these features were not exposed to weathering. So my Q is, What caused the parallel grooves? What made the lattice-like inside? I've been told these are chert concretions, but could they be chert-ized fossils? Another post to come...
  9. Leicester Pyrite Member. This layer between the Windom and the Geneseo black shale represents a sea of death. I find very few types of fossils in this hard to process layer of solid pyrite. Well preserved cephalopods and Placoderm armor (Placodermi is a class of armored prehistoric fish) are the most common fossils found. This very thin horizon can be easily found in the outcrop if you just look for rust dripping down and staining the grey shales below this pyrite layer. Every year or two, a piece of Leicester Pyrite will fall from its position high up in the outcrop and slide down to the creeks edge. It takes a lot of work to process the pyrite for fossils. Every blow with your hammer delivers the strong smell of sulfur and a ton of sparks. The reward for all this patience and hard work are fossils preserved in brilliant fools gold. This unit is also the only rocks in my area that routinely contain the armor of Placoderm fish. Click this link for a detailed description of this unusual formation - http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.835.6976&rep=rep1&type=pdf&fbclid=IwAR0qdFymJq-Hd1_SqU3j3yDw5Trl0ih_KohTv-26Du3b1m9g9s2IYKlW0Xc
  10. Orthoceras, and?????

    Bought this for $5.00 at an estate sale this weekend..........so.......there's absolutely no information on it, but someone prepped this. I believe it contains two species of Orthoceras? - off to the side, is this a different species?, or just a different plane of the same species?.......sorry- don't have specific measurements but the prominent one is about 1" wide and 7" long.......thanks! Bone
  11. Good morning folks. I have a Dolorthocera pseudorthocerid, nautiloid cephalopod. It's Carboniferous period from Serpuhovian Stage, Brontsy quarry, Kaluga region of Russia. Can anyone confirm the ID or provide a link where I can perform some additional research? Thanks in advance.
  12. Fluorescent Bacculites.jpg

    From the album Fossil Flourescence

    I was playing around with the UV lamp in my lab, seeing what might unexpectedly glow this afternoon. This was a nice surprise. It's an internal mold of Bacculites sp. with sutures that fluoresce orange under 345nm UV light. Bright orange like this usually indicates calcite, a mineral that makes up fossil shells and some modern ones, too. Between the mud-filled chambers, the shell was preserved while the exterior of the cone wore away. The shell material was either calcite to begin with or, more likely, began as aragonite (same chemical compound as calcite, but different crystal structure and glows yellow instead of orange) and changed over millions of years to the more stable configuration of calcite. Meanwhile, the mud looks like it may have a little bit of some fluorescent minerals in the mix, but it's mostly a daylight-only affair. The blue may be some residual glue from a label. This specimen is from the late Cretceaous Pierre Shale Formation in South Dakota.

    © C. 2020 Heather J M Siple

  13. Widder Fm.: This is not Tornoceras

    I came home this afternoon in some ridiculously warm weather for January (50F, 10C) and happened to look at a rock I'd collected from the Widder formation about two or three years ago that I had sitting out weathering. It was one that @Kane had quarried from his Gonaitite perch out of the Widder formation and kicked down to me. I'd originally kept the rock because it had a bunch of Mucrospirifer thedfordensis in it and I wanted to see what else would erode out of it. When I turned the rock over I spotted a small round fossil that was brownish... a different color than most fossils. It was pyritized so I chipped it out of the rock and took a look at it. It was a Gonaitite and one that I had never seen before! Most Gonaitites that I have found at Arkona are from the Arkona formation and fall into the Tornoceras arkonense genus, but this one is different. Tornoceras arkonense above, mystery Gonaitite below. I used a new tool that I recently purchased, a home tattoo pen, to clean out one side of it. The pen is quite effective on softer shale or limestone as long as the fossil is much harder. In this case it was pyritized so I didn't have to worry about damaging the fossil. It turns out that this specimen has a smaller diameter phragmocone than Tornoceras arkonense as there are prominent ridges (rather than gaps as in T. arkonense) along the sutures. The suture pattern is plain with a sweeping parabola facing backwards, a straightish line across the keel and then another parabola. I've looked into the usual sources ("CHECK LIST OF FOSSIL INVERTEBRATES DESCRIBED FROM THE MIDDLE DEVONIAN ROCKS OF THE THEDFORD-ARKONA REGION OF SOUTHWESTERN ONTARIO", Stumm and Wright, Paleontology of New York, Hall) and don't see much that correlates to what I've found. Anyone have an idea? The fossil itself is 7/16" (11mm) at it's widest and 2/16" (4mm) thick. It comes from the Middle Devonian aged (Givetian stage) Widder formation at Hungry Hollow, Ontario, Canada. Thanks for looking!
  14. Cephalopod or Rugose coral

    Hi is this a Cephalopod or a Rugose coral it’s from the Onondaga formation. I have been told that it could be a a Cephalopod by one person and Rugose coral by another. Thank you!
  15. I found a drainage ravine with thousands of these these in them. I'm almost certain they're an iron concretion of some type but I've gotten several different identifications. I took a few of them to the MAPS expo last spring for an ID. One person said michelinoceras, but then an expert on cephalopods said no, definitely not, but he had also never seen anything like them. These were found on the north side of Dubuque, IA right at the top of the lower Galena dolomite just above the upper chert beds. They are in a thick sticky grey clay which sits just above a thick iron rich encrusted layer that varies from 1/4 to 1/2 inch thick (blackend hardground?). The clay layer is approximately 20' thick and contains thousands of these. They are almost all vertically oriented, cylindrical in shape, and vary from 1/2 inch to as much as 6 inches in diameter, and vary in length from several inches to several feet long. Some of the smaller ones that have weathered out do look amazingly like cephalopods. I had previously found a few pinky finger sized weathered ones farther down the ravine and thought cephalopod but then found the clay with the bigger ones. They have a center that resembles a siphuncle but I don't see anything that looks like septa or individual chambers. There are too many of these to think they haven't been found before but I can't seem to find anything describes them specifically for this area. I did find a paper from a study done in Finland titled "Ferruginous Concretions Around Root Channels and Fine Sand Deposits". That paper seems to describe what these may be be but since I've gotten a couple different ID's and none of them concretion I was hoping someone with a little more knowledge can tell me for sure. url to the research paper - https://doi.org/10.17741/bgsf/47.1-2.020
  16. Is this an Orthocone Cephalopod?

    Hi all, I have been working pretty hard to learn and identify my fossils as I collect them. I have one that I need confirmation on. I believe that it is an Orthocone Cephalopod but if someone can either confirm this or tell me what it is if I am wrong, I would appreciate it. This was found near Willow Springs, Missouri, USA. If my studying is correct, it should be from the Ordovician Period and from the Jefferson City/Cotter Formations. It measures a little over 57 mm long and at the widest point measures 22 mm across. The attached image is horrible. I cannot get any decent images with the lighting that I am using tonight. If it isn't good enough, I will take better images tomorrow. Thank you for your time and assistance. Doug
  17. Found in Illinois, USA quarry

    Hello! Picked this up in a quarry in Livingston County, IL USA near the town of Ashkum.
  18. Fossil Sites

    Look for places to hunt on hwy 2 from Rockford to Dixo as I'm in area for a day and want to kill time looking for fossils. Any helps would be appreciated. Thanks! Mike. P.s. I'm fine with you want to tag up with me. It'll be nice to have a partner to show me around.
  19. Fossils from Etobicoke Creek

    Hello, this is my first post to the site. I was out in Etobicoke Creek last Monday for the first time looking for fossils and had a few good finds. The first is what i think is a Crinoid, . The second one is part of a cephalopod (i think).
  20. Fossils from Etobicoke Creek

    We took our girls fossil hunting near our house for the first time. We found rocks with lots of little brachiopods but I also found this. Is this a cross-section of a cephalopod maybe?
  21. Endoceras Sp.

    From the album Finds From the Ordovician -488 to 443 MYA-

    Section of Endoceras, from the Collingwood member of the Lindsay (Cobourg) Fm.
  22. Unknown orthocone

    So I have partially removed an orthocone from a nodule that I found in some eroded glacial till. The rock is most likely silurian in age but I can't don't recognize this orthocone. It seems to have faint striations running lengthwise down the shell, which I haven't seen before.
  23. Hi again! Two more ID requests - this time they're from the Bangor Limestone in Alabama, USA (Lower Carboniferous, Mississippian). Specimen #1: An orthoconic nautiloid - could it be Brachycycloceras sp.? Specimen #2: A blastoid - Pentremites sp.? Thanks for your help! Monica
  24. To continue discussion on the specimen listed here, with renewed focus on it being a Cephalopod. As of right now, I'm deciding between Solenocheilus and Ephippioceras. Going directly by the book: Index Fossils of North America (1944, 1980 printing), I can see positives for both. Solenocheilus (Lower Mississippian to Lower Permian, IN, IL, MO, KS, TX and Europe) Recommended by a local expert, but doesn't specialize in Cephalopods. Ephippioceras (Mississippian in Europe, Pennsylvanian, Ohio to Kentucky, Nebraska to Texas) The raised line along the midline of the plate photo is what is selling me on this one. My specimen is much larger than the plate, but not quite double the size. So, two new photos of the specimen. First, looking at the line: (After seeing it this way, I was looking at it 90 degrees in the wrong direction) Flipped, End over end. So, any opinions? I was thinking of removing more matrix from the matrix heavy size, but it will certainly remove the shell material and leave the steinkern.
  25. Devonian Cephalopod

    I found this yesterday in Avoca, New York. It's about 3 cm long. The core looks like a cephalopod of some kind, but the exterior has me puzzled. If it were soft tissue, it wouldn't have preserved, but I have found impressions of a few others like this there and in another site over an hour away. The one field guide I have shows nothing like it and I may have to go hunt down the original 19th century sources. Any clues?
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