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  1. Minnesota Matt

    Horn Coral?

    Hey everyone! I’m back in search of an ID. This rock was found in Minnesota in Norman county. Came across it on the shore while kayaking the river. It’s half translucent and reminds me of horn coral. Could that be or is it just a cool rock?
  2. Hello 👋 I am so happy to have found this forum! I have already gleaned some excellent I formation and look forward to more. I am an avid researcher. If my interest in something, in ANYTHING is piqued, I have to KNOW all there is to know about that particular subject. A blessing and a curse. My curiosity is rarely, if ever, fully satisfied. I have been told by many, many experts that several of the things I have been finding recently are absolutely NOT in Southeast Kentucky amd I MUST be mistaken. Ummm... I live in Southeast Kentucky and most (99%) of what I have found in the past several months has been from an area within 10 miles of my home. So, what am I missing? Only so much can be explained through the occasional drop or glacial deposits. Just in the past 24 hours I have found over 30 small geodes! All between 1 inch and 4 inches in diameter. All within 30 yards of each other. NOT in or near water. Also found were bits of agate, small agate nodules, crinoids, crinoid crusted geodes, loads of Rugose (horn) coral, etc...
  3. jrengel21


    Kids & I found corals fairly well preserved in the red clay/dirt & I soaked I water & small amount of vinegar. After cleaning with toothbrushes -They came out sparkly-like a crystalline cover. These are a couple smaller sections. Red clay is difficult to remove. Tips on removing clay without removing the sparkle? Are these worth anything or bother donating to museum. Thank you
  4. Temu

    Rugose Coral fossil?

    Found this yesterday in a creek bed in middle TN - pretty sure it is a rugose coral fossil but would love to know more about it. I am not even qualified to be listed as amateur:)
  5. I found some time this past weekend while passing through to take a look at a small stream cut exposing cyclothem layers of marine limestone and swamp coal in east central Illinois. Here are some fossils I found from the marine rocks. Bond formation. Offshore sediments, deep water. Ditomopyge sp. UV Lophophyllidium Not sure what these are. These are magnified. Each one about the size of a grain of sand. Assuming they are crinoidal. Any help with ID appreciated. Very tiny tooth measures <.5mm. The acrodin cap is characteristic of an actinopterygian, but I don't know if it can be identified any further than that. Thanks for looking.
  6. Tales From the Shale

    Glen Dean Formation 2022

    Found a real nice exposure of the Glen Dean Formation in central Kentucky recently. Oh man did it not dissapoint. So here is some of the best crinoid material I have ever found. A calyx with partial arms, pictured with some stems and ossicles. A single ossicle, with crinoid spins, that are still sharp. Both of which are as common as gravel here. A small peculiarcalyx and crinoid cup. This massive gorgeous Pentremites sp. I found this one on my first trip, so unfortunately no scale but I will upload more of it later. More large blastoids this time around as well. It may not be as diverse, but I have only seen this quality of blastoids in the Thunder Bay of Michigan. An uncrushed Composita sp. A nice spirifid of some variety. I want to say Neospirifir but that is likely incorrect as it does not fit the range. The partial pygidium of a Kaskia chesterensis? Mm mm mm! These delicously preserved Zaphrentis spinulosum. I have some monsters of these, but again they're from a previous trip so I will post them later. I did find some gastropods and tons upon tons of crinoid stems and bryozoans as well, here is one image of them with various other pieces. The Glen Dean of Illinois occurs nearly on the same Latitude as this locality does. However it does not compare with the sheer quality and quantity to be found here in Kentucky.
  7. SilurianSalamander

    Port Huron, Michigan trip

    I drive 8 hours with a friend to a location he remembers from his childhood as yielding a lot. Oh boy it did. 100% worth the drive. Lake Huron, among the agates, pyrite, yooperlite, has some extraordinary Devonian fossils. All fossils were collected from the beach of his family’s property except for the fenestelid bryozoan, which was found at a gas station on the way there. please enjoy this collection of gastropods, petoskey stones, various tabulate corals, crinoids, stromatoporoids, bivalves, Brachiopods, tenteculites, horn corals, an unidentified agatized fossil in jasper matrix, and a pudding stone I felt like showing off too. Thanks! I highly recommend the area.
  8. SilurianSalamander

    Horn coral or bryozoan colony?

    Found in landscaping gravel at a gas station on a 6.5 hour drive to Lake Huron for some fossil hunting. This is probably Devonian. Instinct tells me horn coral but it looks rougher than that and lacks visible septa at the top. Bryozoan colony? That’s my next best guess. Thanks! Love you guys.
  9. I've been working on a Petoskey Stone presentation for my rock and mineral club and have been collecting various colonial rugose corals that have been on sale on online and Etsy. I've been doing this because "Petoskey Stone" has become a popular name to use to sell fossilized coral and I want to be able to show our club how to differentiate Hexagonaria from other types of coral. I've gone through this forum and gleaned some data from @TqB and @FossilDAWG while they were helping out on IDs and was wondering if anyone could help me fill out this cheat sheet with more information (and correct me if I've gotten anything wrong) on how to differentiate some of the fossils I often see for sale (named correctly or not). Colonial Rugose Coral Identification Cheat Sheet Acrocyathus o Carboniferous o Ceroid o Central lens-shaped columella Actinocyathus o Carboniferous o Ceroid o Zone of bubbly dissepiments (londsdaleoid) Arachnopyllum o Silurian o Astreoid o Septa extend to axial column Hexagonaria o Devonian o Ceroid Pachyphyllum o Devonian o Astreoid Thanks for any help you can provide.
  10. Barry in Ireland

    Limestone Pavement West of Ireland

    Greetings from Ireland. I'm not a fossil person, so could I get an ID on this please? This is from limestone pavement in County Mayo, Ireland. What fascinated me was that it is still 3D, standing proud 0.5cm of the pavement, while the 'valves' are somewhat intact and hollow to a degree. I'd be more used to seeing 'flat' fossils in 2D, if you know what I mean. The card is 8.5cm long, so this spécimen is 17x17cm. Other examples were elongated, approx 17x26cm, while others were smaller. Thank you.
  11. BenK


    Is this a stretched out, coiled coral? Burlington formation, eastern Missouri. Thanks!
  12. andoran

    Rugose Coral from Kentucky

    I purchased this from someone in Kentucky. It was labeled Rugose Coral fossil with no other information. Does anyone know what type of Rugose it is?
  13. PaleoOrdo

    Help needed to ID corals

    I would like to start present some of my coral finds, or what I believe are corals. The first are from Tyrifjord lake area in Norway, I am uncertain of the formation, but I believe it is Ordovician of age. Although one paleontologist told me that the area has Silurian sandstones of Early Silurian age, a geological map I found also includes some Ordovician outcrops. These I presume are favosite corals. Is it possible ID their order, genus or species? Their sizes are about 10-12 cm long. I am not sure these are sandstones or limestones. First rock: Second rock: Thrid rock (this I left in situ): Finally, from same location:
  14. Hi guys I decided to rescue and acquire a new unlabelled specimen. It appears to be a rugose solitary coral that can possibly come from the Devonian of south western Ontario. Can anyone give me any leads on the species level??
  15. Lorney

    Rugose Coral

    I found a rugose coral today and I also found another piece that looks similar but doesn’t have the rugose shape. Can you tell me if it is a rugose coral piece as well of possibly something different. Also found a piece of baculite not too far away. These were found in southern Alberta in the Bearpaw Formation I believe. The pictures below are of the rugose coral I found near by.
  16. I've had these for close to 20 years now and have shown some of them before but figured it was time to do a proper job of looking for info. (If I did before, I can't find the topic) I know nothing about these, either ID or location. They were part of a batch of fossils I received from an old rockhound couple in Nanaimo, which wasn't too carefully curated (a common problem with rockhounds/casual fossil collectors). Looking for info on the mystery items from that lot is what brought me to the Forum in the first place more than 10 years ago. I know Riley's Canyon, Utah has red corals, but lately I'm seeing them from other places like Arizona also, so I'm not at all confident. It's a reasonable assumption that they're from somewhere in the US Southwest as it was (and is) common for rockhounds in our area to travel down there in the Winter for better weather and abundant rockhounding options, but that doesn't narrow it down much. Any ideas? Not all of them are preserved in red color, as you'll see below, so I'm not sure they're from the same place, but they were kind of bundled together when I received them. For reference, I'll number each pic. 1: The lot 2: 3: 4. Sliced end: 5. Sliced pair: 6. Some seem to be water-worn to some degree - these ones more so: 7. Is this a sponge? 8. Chaetetid? 9a/b. These are the ones that have little/no red, so I'm not sure if they're from a different location or just a different preservation from the same site: The larger piece is sliced. 10. This one looks different again, so it could be from a third site....
  17. paleo.nath

    Colonial Rugose Coral ID

    This colonial rugose coral was found in Clarksville, TN and was sent to me just a few days ago and i’m not very well versed in Cnidarian classification, any ideas on a species?
  18. These fossils are fairly common in the Mississippian redwall limestones of central Arizona. I believe they are rugose corals. Is this correct?
  19. I_gotta_rock

    Rugose Coral Cross-Section

    From the album: Delaware Fossils

    Rugose Coral Paleozoic Delaware River, New Castle, Delaware
  20. Samurai

    Rugose Coral #1

    From the album: Rugose Coral

    Fun Fact: This was the first fossil I had found as a kid and unfortunately the first fossil I mined out of limestone!
  21. From the album: Lower Devonian Helderberg Group in Eastern NY

    Enterolasma strictum rugose corals from the Lower Devonian Kalkberg formation. Collected 5/31/20 Rickard Hill Rd. Schoharie, NY
  22. dhiggi

    Today’s local river finds

    Current lockdown restrictions in the UK mean we can’t get to the coast, but we’re lucky enough to live with walking distance of a river with plenty to find. Today was a productive day, we found lots of rugose coral, some stigmaria. Can anyone shed any light on the first specimen (top and bottom in first two pictures,) some kind of stigmaria too? Also, can anyone identify the impressions in the second specimen?
  23. Hi all, Could this be a badly worn rugose colonial coral? My guess, due to what looks like calyces, vs. more typical corallites. Does anyone recognize this? Length is 3cm. Found in Lake Michigan, IL, Wenlock epoch, Racine formation. TIA to all! This area has been a bit better protected and appears a tad less worn:
  24. Lauren16

    ID - Hollow coral with gills?

    Everyone, Can someone identify this coral-type fossil? It's completely empty inside like a clam and has gills like a mushroom. I've looked through lots of photos in the Forum gallery to no avail. Nothing is even close. The 'top' isn't flat; it's a dome like the tip of your thumb, with holes on the tip. In the 'mudstone' matrix there's also a typical rugose coral. This was a loose rock in the area of the Kenogami Formation of limestone in Northern Ontario. Puzzled, Lauren16
  25. kelsey

    Fossil ID Help!!

    I need help identifying this fossil. It was found in Northern California. Sonoma County 7 miles inland. Maybe Rugose Coral? Any help is much appreciated! Thanks!
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