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  1. 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.
  2. 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 correc
  3. 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.
  4. BenK

    Coral?

    Is this a stretched out, coiled coral? Burlington formation, eastern Missouri. Thanks!
  5. 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?
  6. 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:
  7. 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??
  8. GreatWhiteAmmonite

    Rugose Coral? New species?

    Here's some of the odd specimens I've collected and cant identify...please help me, its maddening to have so many of the same thing yet can not ID it...14+yes and counting
  9. 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.
  10. 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, b
  11. 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?
  12. These fossils are fairly common in the Mississippian redwall limestones of central Arizona. I believe they are rugose corals. Is this correct?
  13. I_gotta_rock

    Rugose Coral Cross-Section

    From the album: Delaware Fossils

    Rugose Coral Paleozoic Delaware River, New Castle, Delaware
  14. 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!
  15. Nautiloid

    Rugose corals from the Kalkberg formation

    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
  16. 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?
  17. 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:
  18. 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
  19. 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!
  20. dhiggi

    Local finds

    We’re currently on lockdown but fortunately have a good stretch of river within walking distance. It doesn’t make up for not being able to get to the coast but it’s better than nothing. Picture 2 is a couple of possible crinoid stems that we found. Pictures 3 & 4 I think are some of the rugose coral that are pretty common round here. Does picture 1 look like it contains any evidence of fossil? I wasn’t sure enough to carry it home but left it somewhere I can retrieve it from later if it is fossil. Thank you in advance
  21. FossilNerd

    A Longer and Muddier Stop

    I took a much needed break this morning and went fossil hunting for a couple of hours. I decided that I wanted to go back to the same water eroded hill that I made a quick stop at the other day. It rained last night, so the place was a muddy mess, but I had a good time and it took my mind off of things. It's supposed to rain here for the next 2-3 days. Can't wait to see what else is revealed afterwards. I'll stop in again. Preferably after it dries out for a couple of days. Here are pictures of the hillside that I have been working. The red clay is littered with rocks and fossils
  22. dinosaur man

    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!
  23. Monday morning was dreary here in Central Kentucky. The sky was cloudy grey, and the rain was sputtering off and on. I didn't let that dampen my spirits though. I had planned to go fossil hunting and nothing was going to ruin my day! I grabbed my hunting gear, a cup of coffee, dropped my daughter off at daycare, and headed out. I arrived at the Upper Ordovician (Drakes Formation) spot that I had found this year. The last time I visited this place I didn't have time to really enjoy myself. It was more of a smash and grab. A rush to see if anything was actually there and to gr
  24. REW01

    Rugose or Bryozoan?

    Is this a rugose coral or a bryozoan? There are definite bryozoans in this rock of different types. I was thinking it's a rugose coral, but want other eyes on this specimen. Collected from the Phosphoria Formation in Wyoming, so it's Permian in age.
  25. FossilNerd

    Rugose or Tabulate Coral Colony?

    I believe this to be a coral colony. I'm leaning more towards a rugose colony, but am not positive as most of my experience has been with solitary horn (rugose) corals. Maybe its a larger species of tabulate? Or maybe I'm just over analyzing... I tend to do that. The whole specimen is roughly 4 inches x 4 inches(10cmx10cm) with it narrowing at the bottom to 3 inches (7.6cm) or so. I don't know the age as it was a gift, but I believe it is from the area (Central Kentucky, U.S.A). The individual specimens have flattened sides which makes me think of tabulate coral with i
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