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  1. I am fortunate enough to have such a huge amount of Middle Devonian Givetian material that I thought it best to put the older Middle Devonian stage, the Eifelian, in its own thread. There are some spectacular fossils here as well though! I thought a good place to start would be in the Formosa Reef, which I believe is quite early Eifelian. This tabulate coral and stromatoporoid reef continues similar complexes found from the Middle Silurian, see my: https://www.thefossilforum.com/topic/84678-adams-silurian/page/3/ thread from page three onwards for details. All these Formosa Reef specimens come from a delightful gift from my good friend @Monica who is a tad busy with life at the moment but is fine and still thinking of the forum. This outcrop can be found on Route 12 near Formosa/Amherstburg, Bruce County, Ontario, Canada. This beautiful-looking specimen came to me with only a third of it revealed but I managed to get it this far after nine days of painful pin prepping. Monica found another one and posted it for ID here: https://www.thefossilforum.com/topic/105528-weird-circular-imprints-formosa-reef-lower-devonian/#comment-1172285 The specimen was identified by another Canny Canadian @Kane to be the little stromatoporoid sponge Syringostroma cylindricum. Hardly a reef-builder, but gorgeous nonetheless. It does have a little thickness to it, but not much. Beautiful! Pretty thin, actually. I love this Monica, thank you!
  2. bockryan

    Rugosa

    From the album: Fossil Collection: DC Area and Beyond

    Rugosa Unknown Unknown Unknown
  3. bockryan

    Rugosa

    From the album: Fossil Collection: DC Area and Beyond

    Rugosa Penn Dixie Fossil Park & Nature Preserve, NY Moscow Formation Middle Devonian
  4. bockryan

    Rugosa

    From the album: Fossil Collection: DC Area and Beyond

    Rugosa Capon Lake, WV Needmore Formation Middle Devonian
  5. bockryan

    Rugosa

    From the album: Fossil Collection: DC Area and Beyond

    Rugosa Alpena, MI Rockport Quarry Limestone Middle Devonian
  6. Hapchazzard

    Silurian of Gotland horn corals

    I've got a backlog of a bunch of fossils from the Silurian of Gotland that I received in a lot that I have yet to assign an identification to. In order to not overwhelm the thread with too much stuff I'll only post a few for a start. Location: Gotland (more precise info not available) Age: Late Sheinwoodian/Early Homerian Formation: Unfortunately unknown. A lot of the fossils from the same lot that I identified are restricted to the Visby Beds, but that's hardly conclusive evidence. Fossil 1 This one is especially confusing to me. Is this a colonial rugose coral that's badly damaged and heavily encrusted by a bryozoan? Or is it actually several things glued together by a bryo? Fossil 2 Fossil 3 Fossil 4 Fossil 5
  7. artur

    Horn Coral cleaning?

    Title says it all, this is my only rugosa fossil and its half in a martrix, how would I go about removing my peice from it? What tools would I need, and is it possible? Thanks in advance!
  8. minnbuckeye

    Mississippian Rugosa Coral to ID

    A new coral was found when geode hunting in NE Missouri. Likely Warsaw Formation, maybe Keokuk. In either case it is Mississippian. I am leaning towards an ID of Acrocyathus floriformis, a colonial rugosa known to occur in the Mississippian. But I prefer that coral experts chime in before I label it!!! @TqB Thanks Mike
  9. RKLMB

    Rogers City, MI

    Please help to identify. Not convinced it is horn coral. Looks like a colony of rugosa but what kind?
  10. 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.
  11. Hello everyone! I want to tell you about a trip to a stream in a snow-covered park. I took my three-year-old daughter (who has already helped me search for fossils) on a trip. Konkovsky or Stone stream is located on the territory of the Bitsevsky Forest Park (the southern outskirts of Moscow), I had information (https://www.ammonit.ru/foto/61829.htm ) that carboniferous rocks accessible as a result of glaciations (quaternary moraine deposits) can be found there. The temperature on the day of the trip was -2...- 5oC (28...25oF) with a very unpleasant cold wind at a speed of 6 m/s. The entire bottom of the stream is really covered with moraine stone. As a result, I was able to briefly examine about 20% of the stream. Brachiopods replaced with flint were found. The imprint of a large single coral rugosa. As a result, there are prospects for further finds, I plan to explore the stream in a more favorable environment to the place of its confluence with the Chertanovka River. And in early spring, start searching on the Chertanovka River itself.
  12. Tammy and I made our first post-pandemic roadtrip and we went to Chicago to see family. Decided to drive as I was not yet comfortable with airports and airplanes. I had hoped to visit a site in southern Illinois where blastoids used to be plentiful and easy to find. Sadly, that site was mistreated and is no longer available. Members here on the forum suggested several alternatives which should produce the blastoids that I longed to hunt for. We found that the large (and well known) roadcut just north of Sulphur, Indiana was along the route (kind of) on our return trip and so it was added to the itinerary. We drove down from a last lunch in Chicago's Chinatown and crossed Indiana to check into a hotel in a small town just west of Louisville, Kentucky. The plan was to drive west to visit this Chesterian (Late Mississippian) site and see what we could find. We got up early, refueled, and had a quick breakfast since we planned on returning to the hotel and cleaning-up before the 11am checkout time. The morning proved to be much more overcast than the preceding evening. Things weren't looking promising as we were getting out to the site. You can see in the photos that the sky did not show promise of cooperating with us and the pelting rain along the highway was less than encouraging. The rain had slowed to a light drizzle and we arrived at the roadcut which provided nice wide shoulders to pull off the road a safe distance. Tammy decided she'd let me do the scouting and see if it was worth leaving the dry warmth of the car and so she stayed behind with her tablet to entertain her while I made good use of my raincoat. It took a while to find a good access point to climb up the first and lowest wall of this stepped roadcut. I walked most of the way down the road only to see the wall get taller and less accessible. I crossed over the road and walked back the way I had come till I found an opening. The rock face would have been easier to scale had it not all become quite slick from the rain. Once up on the first terrace level I walked along till I spotted a means of climbing up another level. I was headed up to the loose talus slope between the second and third levels. Along the way I spotted what I believe might be the Eastern Box Turtle (Terrapene carolina)--the shell patterns seem to be quite variable on this species but I'm sure @Tidgy's Dad could confirm or refute. When I finally started seeing crinoid stem segments and a number of small rugose corals I knew I had found the level I was looking for. It didn't take too long to spot the first blastoid looking like a pentagonally symmetrical marble. Most of the little Pentremites sp. blastoids were in the pea to garbanzo size range. Many of them were loose but a few were still attached to a chunk of the matrix. I spotted a little piece of the matrix that looked to be peppered with a bunch of semi-articulated plates from what I'm guessing is a crinoid calyx. This needs further inspection with the aid of some magnification. I took some in situ shots of my finds as I figured I'd probably write a post on this site. I selected a number of the nicer finds and upon review of the images I noticed that had missed things that I could clearly see in the images. I was so focused on developing the blastoid search image (rounded items with the pentagonally V-notched edge on the top) that I forgot that the Archimedes screw shaped bryozoans were also here. You can clearly see an Archimedes screw bryozoan actually touching the blastoid I picked up--talk about tunnel vision. https://www.uky.edu/KGS/fossils/fossil-month-09-2018-Archimedes.php The clouds were starting to break up and a little increase in light levels was welcome to aid the search. I could just barely see the car where Tammy was through the dense trees that cover this roadcut. I had tried to call her to let her know I hadn't fallen on my noggin yet but our cell phone reception was pretty poor here. Made a mental note to bring along some inexpensive walkie-talkie radios if we ever find ourselves split up and trying to communicate where cell phone coverage is poor. The rain had made the clay on the talus slope very soft and slippery. I spent a lot of time with multiple points of contact to the ground--holding on with both hands usually to avoid possibly losing my footing. Having my head held close to the ground in order to see the small blastoids obviously works better if you scan the area slowly. I knew I had limited time here and was searching somewhat quickly but I'm surprised that I missed this second blastoid just a hand-width away from the one on top that I did collect. It's also quite obvious (now) that I missed this other Archimedes that is nearly touching the blastoid underneath. At least I was getting pretty good at spotting even the tiniest of the blastoid specimens. I found a larger blastoid that had been flattened a bit and I spotted the first brachiopod. It was odd to see the brachiopods being so relatively rare as they were always so common at the few Devonian sites I'd hunted. I finally remembered that there were Archimedes at this site but only after I spotted this one. There is no telling how many more I missed. My time was running out and I was looking for one last find of the day before quitting and then trying to find a path back down (you never remember the path up as it looks different from above). Going down is usually more dangerous than up and so I spent extra effort looking for descents that wouldn't land me in the ER. Happily, the last find of the day was one of the largest of the blastoids. That seemed to put a cap on this 45 minute excursion into the Mississippian (my first fossil hunt from this geologic age). From up on top you can see the interchange with route 64 heading back to Lexington which is the route we took to arrive later that day in Asheville, North Carolina to visit friends we haven't see in 2 years. It was a fun little excursion and signs that a longer hunt would be even more productive. The fossil-bearing layer is about 2/3 the way up to the top of the slope. I spotted some better access points on the way back down and if I ever get back to this locality I hope to explore with with many more hours of time to dedicate to the hunt. Cheers. -Ken
  13. Bill Hoddson

    First Serious Prep

    This is going to be my first serious attempt at removing a fossil from a rock, and cleaning it for display. It's a solitary horn coral found in a parking lot in Traverse City, Michigan. Base rock is a rather coarse grained limestone, so it should be easier that a finer, densely grained matrix. The only tools I have currently are a Dremel with a flex attachment, carbide cutting disks and diamond burrs, as well as various dental tools and muriatic acid. My plan is to try to safely cut the specimen out of the main body of the rock, and then proceed with the finer details cleaning. Sorry if the photos aren't very clear. All I have is an older smart.
  14. Ralenka

    Id help - coral rugosa?

    Found these at Salt Point beach of Cayuga lake. Are these rugosa corals? The length range is from 0.5 cm to 2.5 cm. Thank you!
  15. Cross-section, specimen 50mm in diameter. Marcellus shale south side of Stroudsburg, PA. Collected in 2007
  16. On July 1st, 2021, I went for the first time to a public, personal site and was very pleased with the results of my fossil excursion. The locale consists of several exposed formations, namely the Liberty formation I was hunting in. In my region of southwestern Ohio, that's known to be one of the best fossil-hunting formations due to its remarkable preservation of particularly fragile Ordovician life, even when compared to the excellent fossil preservation quality of other formations in the area. The thirty-three degrees Celsius heat was rather hot by itself, and as the sun's rays made me question my latitude, the rainwater in the ground from the rain several hours prior was evaporating and creating a blanket of humidity-saturated air which prevented my body from transpiring. That was lovely. On top of that, this was above a very tall cutaway, so there was this constant updraft of hot, humid air coming from the bottom. Needless to say, conditions were extremely hot and humid. A thermos filled to the brim with refreshing, ice-cold cranberry-grape juice was a lifesaver, as otherwise I would have certainly overheated and becoming a sizzling omelet atop a frying pan of Ordovician fossils under that laser of a sun! With that being said, this is my first post regarding a fossil hunting trip in three years! While I have not been active on this forum, my paleontological trips have been ever more numerous. I remember you all, as I have been secretly watching in the meantime. I am a fossil sniper, after all. I should mention that I am an adult now, and I would prefer to have the "Youth Member" tag removed from my name. I plan to conduct a full survey of my entire collection before attending university, so look out for that. My collection is considerably sizeable now, having nine years of fossil-hunting under my belt. Here are my finds! Best & rarest for last, though all of them are incredible in their own right. Every edge of a square on the grid is half a centimeter. Assorted rugose corals. Gastropods. Branching bryozoan. The central branching bryozoan specimen in the prior figure under 200x microscope magnification. The skeletal cavity wherein individual zooids once resided 440 million years ago are evident, each 0.2 millimeters in diameter. The sheer level of detail in the preservation is as mind-blowing as this fossil's age. This photo is the product of using a computer to compile 140 photos focused at different layers of the specimen, as microscopes have a very narrow depth of field. I'm sure you all find as this fascinating as I do, so I compiled a photo for you guys. Assorted brachiopods, with two bivalves on the top left. I collected some superb Rafinesquina alternata, which don't tend to come with both fragile and thin halves intact, together, and out of the matrix. There were also some Leptaena that I did not photograph, but were lovely and undulating. The rest are common genera here, except for the fourth one from the right in the bottom row and the partial one of the same species immediately northwest of it, which I would like help identifying. Expect to see it soon on the ID forum. Assorted associated, straight-shelled nautiloid cephalopod septa. A larger example of associated, straight-shelled nautiloid cephalopod septa and a partial living chamber. Calcified straight-shelled nautiloid cephalopod. I always love the crystals on these. Flexicalymene meeki on the left and right. The left one is perfect, and is a very large example of what I generally find--my largest self-found complete trilobite, in fact--so I'm very happy with him. The right one is heavily weathered along its left and right, but the medial length of the pygidium, thorax, and cephalon are all present in some way, and the pleurae and glabella are resonant with Flexicalymene meeki, and I'm very happy with him, too. Adorable, curled little finger hugnuzzles of the ancient sea. Drum roll please! Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 This is a huge living chamber of a straight-shelled nautiloid cephalopod! Unlike the septal segments, the living chamber is very fragile with its thin, unsupported walls. This means it is very rarely preserved. Hence, in my near-decade of fossil hunting, I have never found a complete living chamber with its outer shell included until now. Let alone of this size! The only reason this one survived is because of the encrusting bryozoan that grew over its walls and thus strengthened them after the animal died--Figure 5 demonstrates the layers of the bryozoan well. This is also demonstrated on the side without bryozoan strengthening it in Figure 4, and how it simply crumpled due to the weight of sediments that accumulated on top of it after the animal died. Interestingly, one side has much more encrusting bryozoan than the other--this suggests that immediately after the animal died, part of the shell was resting on the silt of the ocean floor, preventing bryozoan from growing on it. The contrast in the thickness of walls of the living chamber & encrusting bryozoan growth on opposite sides of the fossil is evident between Figures 1 and 2, where in Figure 1 the walls of the living chamber are quite thin (one can tell from the thickness of the dark cracks on the bottom left), whereas in Figure 2 the walls are visibly significantly thicker (and layered from the encrusting bryozoan, upon zooming in). Deducing all of this is so cool. Additionally, Figure 3 zooms in on the bottom left fraction of the visible living chamber in Figure 2, and it actually shows the bryozoan growing around the edge of the living chamber walls and into the living chamber. This means that's the very outer rim of the living chamber! (In Figure 3, the white line is the living chamber wall, and the layers around it are the encrusting bryozoan. The light tan stone inside is just limestone.) On top of the sheer rarity of a fossilized living chamber, especially of this enormous size, having the edge of the living chamber preserved with enough detail to show the bryozoan that that grew into it over its rim—almost half a billion years ago—fascinates me. To finish this post off, there really is a mystery in every fossil. With the encrusting bryozoan only growing one side of the living chamber in the final specimen, and the subtle, hard-to-spot detail of how it grew around the rim and into the living chamber, it's like every fossil is a murder mystery (literally) and we have to be Sherlock Holmes and figure out details about how the animal died. Considering this was 440 million years ago, we're all some pretty hardcore forensic scientists!
  17. BRADAI M.

    Upper Devonian Rugosa ID

    Hello guys I collected this Rugosa coral from the Upper Devonian of Charouine, located in the Ougarta ranges, Algeria. I wonder if someone can help ID the genus and species properly! I appreciate your efforts.
  18. Crankyjob21

    Some really cool fossils from my land!

    My collection of some really cool fossils on the land most of the fossils I have in my collection are bought so it’s always nice to find something actually in the field. Now my main goal with this post is to try to identify the trilobite I found today although it only has the head piece, it clearly shows the eye and part of the gabella. The horn coral which are the sort of conical fossils should help identify the age of the rocks. if anyone else can give an ID on the rest of the fossils that would help thanks. By the way these were all found in Dane County, Wisconsin. (PS) I have no clue what the fossil is with the weird holes.
  19. Tidgy's Dad

    Boy, 6, Finds Horn Coral in Garden.

    https://www.bbc.com/news/uk-england-birmingham-56554925 I have no idea what that coin is.
  20. IsaacTheFossilMan

    UK Convex Spherical Structure (marine)

    Heya! This is a spherical convex structure found in the South of the England. Unfortunately, as I found it when I was very little, I cannot seem to recall the exact location, and, thus, the age. Originally, as a child, I crudely assumed it to be a mushroom... Ah, the wonders of child's minds... More recently, I conducted a study upon it, and, due to the septa and mouth-like crystalline structure at the top, I identified it as a polyp cup of a Rugosa coral. However, I am still unsure as to what it is. Any input would be greatly appreciated, cheers!
  21. From the album: Pennsylvanian Fossils of Northeast Oklahoma

    This young, possibly ephebic, corallite had a very deep attachment area on bottom. This rapid upward growth may have occurred in response to—you guessed it: Sinking in the mud.
  22. From the album: Pennsylvanian Fossils of Northeast Oklahoma

    The next few images will show some of the many growth forms of Gymnophyllum wardi, a solitary rugose button coral. G. wardi is the only known species of the genus. It is locally common in the Middle Pennsylvanian (Westphalian) Wewoka Formation in Okmulgee County Oklahoma. Fossils of the species also occur in the lower part of the Labette Shale in Rogers County Oklahoma. The tiny corallite in this image displays many characteristics of the early, neanic, stage of growth, including crooked septa and a deep central pit.
  23. From the album: Pennsylvanian Fossils of Northeast Oklahoma

    This tiny Gymnophyllum wardi corallite shows neanic characteristics, including long septa that extend from the center of the calyx to the periphery. Also, at the center of the bottom side, you can see the small area where the corallite attached to the mud in shallow, calm seas where these corals are believed to have lived.
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