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  1. 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 encr
  2. turtlefoot

    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
  3. Bwminer

    Found in Illinois, USA quarry

    Hello! Picked this up in a quarry in Livingston County, IL USA near the town of Ashkum.
  4. Mschaecer81

    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.
  5. JUAN EMMANUEL

    Complete Treptoceras crebiseptum

    From the album: Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Complete specimen of a late Ordovician cephalopod Treptoceras crebiseptum, even with the living chamber intact. The length is appr. 37 cm. From the Mimico creek, Georgian Bay formation, Ontario. Specimen found in shale and my first complete one!! I usually find small fragments of the phragmocone at Mimico creek. Also keep in mind specimens found in shale are preserved squashed, compared to the ones preserved in limestone they are preserved in their original shape.

    © (©)

  6. BrianC

    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).
  7. Taylordesa

    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?
  8. fossilzz

    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.
  9. fossilzz

    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.
  10. 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
  11. 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)
  12. Reklaw

    Platteville Cephalopod

    So this is a fossil from Beloit Wisconsin found in the Platteville formation. I am pretty sure it is a cephalopod but I have no idea what genus or species. The siphuncle is hollow except for two septa that run right through it. 3" post-it note for scale.
  13. A week ago today, I took the day off work to hit one of my favorite sites, a roadcut above the Illinois River in Oglesby, Illinois. This cut exposes the Pennsylvanian LaSalle Limestone member of the Bond Formation and produces abundant brachiopods as well as occasional other fauna including gastropods, cephalopods, coral, trilobites, and shark teeth. The weather was perfect, sunny but not too warm, when I pulled up. The cut is a somewhat unstable slope of cobbles and boulders of varying size, almost all with at least some fossils in them. To get up to the
  14. I_gotta_rock

    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?
  15. gieserguy

    Cephalopod?

    Hey! I just took a trip out in the pouring rain to a road cut in Oglesby, Illinois. This road cut exposes the Pennsylvanian LaSalle Limestone member of the Bond Formation (thanks to @deutscheben for this info!) I found lots of beautiful brachiopods, but as I was heading out, this guy caught my eye. What do you guys think?
  16. ToeKnee

    Endoceras?

    I found these in the McGregor member of the Platteville formation in SW Wisconsin. Endoceras?
  17. I am nearly sure the top piece is Metacoceras. The middle is a clam, but what species? Perhaps Astartella concentrica? The bottom, what is that thing? 6477/6478 show it in detail. I find these a lot. Are they brachiopods? Not shown, but there is a horn coral on the back of the piece in a cross section.
  18. A 15cm fossil from "Nautiloid Alley" alongside the creek in Long Branch, Ontario. Also separate images from a "two-fer". For some reason, one sometimes encounters 2 or 3 close together in the same medium sized rock.
  19. Bguild

    Penn Dixie Round 1

    This year I pulled the trigger on heading to Penn Dixie for the Dig With the Experts weekend! Definitely would highly recommend . I drove up from Boston to the Buffalo area on Thursday and spent the day Friday digging with @Malcolmt and @JamesAndTheFossilPeach. It was a blast! Thanks again guys for giving me a lay of the land. Credit to @JamesAndTheFossilPeach for the find of the day with a giant Eldredgeops (pic below). Saturday and Sunday were spent looking for trilobites in the roped off Dig With the Experts section of excavated shale with some success. Monday I drove back to Boston, and s
  20. 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.
  21. Found this cephalopod at Caesar Creek a month ago, just now got the chance to clean it up now that school is done. It's about 4.5 inches long and 1.5 inches wide. My best guess at ID is Cameroceras but if anyone thinks it may be something else please let me know. Looking at about 450 million years old. Before After
  22. Manticocerasman

    Bactrites sp.

    I've been cleaning up a few boxes with devonian fossils from the past few months and came around this nice little fellow. I cleaned him up and gave him a paraloid treatment to preserve the pyrite. It is a complete specimen of a Bactrites sp. from the Matagne shales ( Frasnian, late Devonian ) from Belgium, both phragmocone and body chamber are preserved. They are a little unusual, as the do not belong to the nautiloids as his first appearance might suggest but they have their own subclass and are considered to be the ancestors of the ammonids ( they have a ventral syphuncle like all
  23. This could be my fossil of the day… but I would like to get your expert opinion please.
  24. Drufeus

    Spyroceras? New York

    Been having some heavy wind and storms. Found this on the shore of Lake Ontario in Henderson Harbor, NY. From what I have researched online and previous posts, thinking this is Spyroceras? Decent size too. Very happy with this and found it in a couple pieces so had to glue back together. Can anyone confirm or help to to ID? Rock is mostly Shale and Limestone. Area Ordovician in age from what I have been told.
  25. Back in May 2017, I brought back some nice fossil plates from Ohio, I believe Ordovician in age. First photo is plate 1. Next photo (of plate 1) shows a close-up of parts of the trilobite Isotelus, next photo - a nautiloid (unknown species), next photo shows valves of the brachiopod Strophomera, along with many bryozoan fossils. Next photo is a close-up of crinoids on plate 3. (Not much on plate 2). And last photo is of quite a few crinoids on plate 4.
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