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Showing results for tags 'brachiopod'.
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From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota
Locally common? Most of those individuals were found in one layer this year. One of three official species of Strophomena from Decorah/Platteville Formation at least in Minnesota. #1 It resembles Strophomena filitexta into having an enclosed muscle scar. But it differs greatly from Strophomena filitexta into several ways - one of the most noticeable ways is into having a prominent central septae that run down the center. The other two Strophomena species lacks that prominent central septae that runs all the way down the shell. #2 is a false sulcus that runs down the outside of the shell. In vast majority of individuals that I have looked at, only one half have the false sulcus on the outside and often it is not that easy to find, being a subtle depression that runs down the middle of the shell on the outside. #3 On the outside of the shell the costae is more uniform compare to the other two Strophomena species. -
From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota
Found in both Decorah and Platteville Formation. One of two official Oepikina species found in Decorah and Platteville Formation. #1 shows a distinct feature of Oepikina that most sources doesn't seem to mention that makes it distinct from rest of family branch at least for Decorah/platteville formation - A distinct growth line that always occurs 80% to 90% of the distance from hinge teeth. #2 shows that compare to most if not all brachiopods from Decorah to Platteville Formation, Oepikina is the most extreme in inflated shells, often resembles a cannon ball cut into two dues to its fine costae lines making it looks nearly black in Decorah formation. #3 So far I have only specimens from Platteville formation that shows muscle structures. The lighter colors shows where the muscles are attached to the shell and the darker colors represent the prominent central septae that runs down the middle of O. minnesotensis. It lacks the irregular septae that radiates away from the hinge teeth of some O. inquassa individuals. -
I recently found this brachiopod in an Upper Ordovician formation, I usually find hundreds of sowerbyella and other fossilized gastropods, this one seems rare in this formation as these are the only ones I have found for this genus. An ID would be much appreciated! Thanks!
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Manhatango formation VA fossil expedition 10/2021
Rexofspades posted a topic in Fossil Hunting Trips
Hi all, me again. Went on an expedition with my dad to show him what I do on my free time . Did some research into nearby formations and saw a promising one was in Gore VA. After casing the place in google maps dad and I arrived there at highway 50 we started on the road cut across from the meeting place. The formation seemed promising from the road, but after finding only the same old brachiopod molds and crinoid stems I saw it as a bust. Not deterred, I set on doing a little more follow up research and found that the Legendary store was nearby. After relocating we started to look and our luck turned around for the better. I bagged two of the biggest and best preserved Trilobites so far. And Dad found some weird things splitting shale that I had no idea what they could be.. Pictures below, any comments, corrections or ID's would be appreciated. This trilobite has a funny story attached to it. I spotted it laying fossil side up in the scree a foot away from my bag after slipping. After laughing at the sheer coincidence of it all I said that this is a lesson to check every rock you can when fossil hunting. on the cliff itself I found this one after splitting open the rock a bit revealing the tail of a trilobite. after careful Extraction, I wrapped the piece in tinfoil and cleaned it up at home. after some light prep work I was giddy to find out that this was a mostly intact enrolled trilobite. while the Cephalon was missing, the thorax and tail were present and folded onto each other. this is easily one of the better pieces I have found. next come the mysteries I have no solid idea if these are anything good or not but I figured I would ask you folks.
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From the album: Fossil Art
© Denis Arcand
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I was just labeling and filing some summer finds from the Solon member/ Cedar Valley Formation/ Devonian of central Iowa. These 4 items have me a little confused, so I am reaching out for knowledge! 1. . 2. 3. 4.
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I collected this brachiopod showing part of the brachidium yesterday - quite rare to see in this area. It's partially silicified and I was thinking of perhaps etching it out a little further. It's also a good geopetal example, with sediment in the bottom (graded if you look closely), the remaining void above being filled with calcite that has helped preserve the brachidium. On checking my photos, I realised that there were some nice clear foraminifera, about 1mm across, which I haven't really noticed much before from this limestone. These photos are just of the rough surface, taken just submerged which reduces the surface bumpiness and allows better contrast (much better than just wetting it). I think I've managed to identify the two(?) types shown here though I'm very happy to be corrected! There are many more in there and I'm going to cut and polish some of it. Great Limestone, Pendleian, upper Mississippian. Weardale, Co. Durham, England. Scale in mm. (The first Endothyranopsis is at the top near the rule, and another is halfway between the 10 and the rock edge. See blowups below.) ?Endothyranopsis sp. The white blob to the left of the obvious specimen may be the same species seen at right angles to it. Palaeotextulariid - I looked at a few genera of these and they're hard to distinguish from each other in a random section. More palaeotextulariids - at least two specimens Another ?Endothyranopsis sp. (actually on the reverse of the rock). General view - it might be zoomable to see various forams and bits - this is how I was looking for them and it seemed to be easier than with my x20 binocular microscope. Some good burrows showing up as well, especially in the bottom half. Finally, a view under water of the brachiopod - shows some quite jazzy calcite around the brachidium. I'm not sure if there's more than one loop here or just crystals growing out from a loop axis. Sparry calcite in the middle.
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Hi all, I went on my first fossil hunt today! Destination was the DSR quarry near Hamilton, NY. We had great fall weather and the leaves are really starting to turn. Here’s who we encountered:
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I found this in a creek west of Waco, Tx. From the maps I looked at, it seems likely this is the Pawpaw formation. My guess is that the item is the ribs of a brachiopod, but I wondered what better informed collectors might say. The item is about one and a half inches long. The other pictures show the fossiliferous layer that it is still in, as I did not think I could get it out of the lateral crack that exposed the layer without shattering it. Anyway, this is my only picture of it and I look forward to your comments.
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Devonian Ammonoids, Cephalopods, and More from Foreknobs Formation of New Castle, Virginia
fossil_lover_2277 posted a topic in Fossil Hunting Trips
Hiked up to some Devonian Foreknobs Formation exposures yesterday on a mountain in the Jefferson National Forest in Craig County, Virginia. Found some awesome and beautiful ammonoids, cephalopods, and more!!! Now I’ve just gotta find some trilobites and crinoids...lol Some of the better ammonoids I found in some mudstone: Some of the different types of cephalopods along with some brachiopods: And 2 unknowns, not a clue in the world what these are:
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This is a recent prep I undertook - a rather incomplete specimen of a Chonetes bastini, a species of brachiopod from the Leighton Formation. I picked this one as a practice piece to try some new techniques on, and was hoping for any tips on different finishes for the matrix. I have heard that beeswax was often used for the matrix to make it appear darker, but did not know the proper methods or appliance techniques. Any thoughts on the finished product are also appreciated! The specimen itself is missing the upper right left of its shell, and only has two spines present (upper right). Otherwise, it was a well preserved specimen. I applied a thin coating of paraloid to the shell, to make it stand out, as well as preserve it better. The pictures show the specimen before and after preparation. The first image is of it before prep, while the last two are of it after. Thanks for reading! @Ludwigia @Terry Dactyll
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I have a piece of limestone found in a gravel pit. It contains two brachiopods I'm having a hard time identifying. Both appear to be the same species, just differing states of preservation. The larger is about 3/4" wide.
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From the album: Fossil Art
© Denis Arcand
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From the album: Fossil Art
© Denis Arcand
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From the album: Fossil Art
© Denis Arcand
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From the album: Fossil Art
© Denis Arcand
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From the album: Fossil Art
© Denis Arcand
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From the album: Prae's Collection (REMPC)
REMPC BR0005 Brachiopod - Platystrophia sp. Ordovician Mount Aurburn Formation Maysville, Kentucky, United States-
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Hi all. Managed to get out to Penn Dixie fossil park a couple weekends ago. Trilobite pieces and brachiopods from the Moscow formation. The lone head is the same on with a scale, one shown under magnifying glass. The same with the two bodies. The trilobite head looks like it's from an Eldredgeops rana. And the brachiopods Mediospirifier audaculus (lone) Rhipidomella sp .(pair). Thanks for viewing.
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Have some Mid Devonian brachiopod or bivalve shells that I am not sure about, tried to do some research on my own on what I found. Hoping to get some ID confirmation or help here. Greatly appreciate the help. 7 pictures below: 1. Bivalve Shell? Moscow Formation I believe 2. Brachiopod Shell, never found another like this one? Windom Shale from Livingston Co. Wondering the difference between these two spirifers: 3. 4. 5. Rhipidomella? 6. or is this Rhipidomella? 7. Bonus, cephalopod? gastropod?
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take a look at this brachiopod fossil I removed complete in a rock today
matthew textor posted a topic in Fossil Hunting Trips
Hi everyone take a look at this brachiopod shell in this rock I removed that came out complete in the creek today. here is a photo :
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From the album: Prae's Collection (REMPC)
REMPC-BR0006, BR0008 Brachiopods - Indeterminate species Silurian Waldron Shale St. Paul, Indiana, USA-
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This past Sunday, I had about 2 hours to spare, and wanted to look for fossils. I obviously couldn’t go far, so I decided to see whether I might have any luck fossil hunting along the Iowa River right in Iowa City. The exposure there is from the Coralville Member of the Cedar Valley Formation, which is mostly Devonian limestone and Dolomite. The faunal diversity in this strata is not great - some solitary and colonial corals, a smattering of brachiopods and bryozoans, and a few small crinoidal columnals. I had time to check out two locations very near downtown Iowa City, and both within two miles of my house. The banks leading to the river in this area are relatively short (~10-15 feet), but can be steep and/or blocked by dense vegetation. The first location allowed access to the river via a small boat launching ramp. The river at that point is not scenic and the brief stretches of shoreline contain a surprising amount of large discarded slabs of concrete. This must have been near somebody’s favorite fishing spot, as I saw a chair perched neatly on the stones of the shore. I poked around for a bit and found quick collection of some species of the colonial coral Hexagonaria. I assembled the finds for this photo. They are not that well-preserved. I did find it interesting that some pieces are brownish and contained open corallites without intact septa. These were all thin sheets about 10 mm thick. Other pieces were thicker and larger, grayish stones whose corallites were filled in. I didn’t find much else there other than a small patch of some species of the Bryozoan fenestella a beat-up brachiopod and an even more beat-up solitary rugose coral. With only 45 minutes left, I went about ¾ of a mile north, where there’s a rough, worn-out path to the river; a path likely made by people going down to fish. Here I had more luck, finding a place I’ll return to later when I have more time. I almost immediately found two very large rocks with plenty of brachiopods in them. Unless you zoomed in very close to where my fingers touch the rock in the second picture, you are sure to have missed my favorite find. Here it is zoomed in more closely. Both valves of a fairly large Platyrachella iowensis. I was in a hurry and at first was not going to try to get it out for fear of damaging it in my rush. But with just a little gently prying with the pick tip on my rock hammer, the specimen popped out quite nicely. Here are some pics of it after I got it home: I then found a palm-sized chunk of solitary rugose coral. I’ve read that a common genus of this coral in this strata is Cystiphylloides, although I have no real basis to ID this as such. I still had about 10 minutes to pry open a few pieces of one of the large, brachiopod-filled rocks and got what I think is a species of Vinlandostrophia, as well as a few, small brachiopods that are not identifiable (to my unskilled eye).
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Hi all! Went on an expedition to Wardensville this weekend to try out some new equipment, decided to go to the Lost river quarry and try my hand at shale splitting. The drive was nice and uneventful. but eventually I made it to the spot. The scree was more treacherous than I expected, has to use my new rockhammer as a pick of sorts to help anchor myself. this was my very first time to this locality, doing anything like this for that matter, so I had no idea what I would find if anything. after scrambling up to the rock wall and looking over the texture my eyes were met with the first find of the day, a trilobite partial sticking out of the rock. I was excited and managed to retrieve this one from the matrix. Pouring over the rest of the surrounding area, I was able to find a couple more trilobites, brachiopods, and some coral material. Following some of the advice from this forum I brought tinfoil to wrap each fossil in. There was a nice family that also pulled up to look for fossils and I spent some of the time chatting with them about the formation and the surrounding area. I will be making a separate post with some of the finds that I cannot ID, and maybe asking for some fossil prep advice. any Fossil ID or suggestions are appreciated as always!
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A recent trip to the Madison Group near Yogo, MT turned up a small exposure for Mississippian fossils, mostly small crinoid hash plates but with a few little surprises. I'm still learning about different types of fossiliferous rocks; I believe this was an outcropping of limestone. I tried to locate these fossils in the National Audubon Society's Field Guide to Fossils, but I'd like to get an opinion from someone who knows much more than I do (which, let's be honest, isn't very much ) 01: These were the largest brachiopods I recovered from the site. Perhaps schuchertella? 02: This one straight-up stumped me. At first I thought it was some sort of aquatic plant or coral, but my reference book is pretty limited in plants, and it looks like no corals I've seen. 03: These are very small, but the coloration of this tiny group is what caught my eye. I'm sure the small segments are crinoid, but please correct me if I'm wrong. I have sectioned off a few small fossils in the plate that I'd like to know more about. 03-1 looks plantish, but I had the same issue with this one that I had with 02. 03-2 are so small that I'm not really able to differentiate one mollusc from another. 03-3 is straight-up weird and I have no idea what to make of it. I won't even venture a guess; I just have no clue. A picture of the outcrop. It was small but kept me busy for several hours. Please let me know if I need to upload more pictures. I'm pretty sure I did everything that the multitude of "how-to" posts said to do... Thank you!
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