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Showing results for tags 'silica shale'.
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From the album: Nautiloid’s Trilobite Collection
A nice example of B. lucasensis from the Middle Devonian Silica Shale of Ohio. I've been looking for one of these for a while!- 1 comment
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This piece, (around 2.5 cm) split out from some shale. I know very little about fish at this point, but other pieces I have found Placoderm plate pieces before. This appears to be a fin. Maybe Placoderm or Onychodus ... or other? Does it look familiar to anyone?
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From the album: Misha's Middle Devonian Fossils
Ptyctodontid gnathal plate Givetian Silica Shale Fm. Paulding Ohio- 4 comments
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Hello everyone, I recently got this Ptyctodont tooth plate from a certain well known auction site and wanted to see if anyone here may know where I could get more info to identify it. I purchased this fossil for really cheap, I'm not sure why but I was the only person to bid on it, not sure if others just didn't recognize it, or nobody was interested. This plate is a large, at least in comparison to my two other 1 cm long Ptyctodus plates from Russia, and is labeled as coming from the Mid Devonian Silica Shale in Paulding OH. I took a look in my book on the Silica Shale and saw that quite a few of these fish are found there, I tried looking into the different genera further online but found few resources and nothing very helpful. If anyone knows what this may be more specifically or where to look for further info, I'd really appreciate it. Maybe @connorp or @jdp might know more about this? Thank you for looking, Misha
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I collected this bivalve cast a couple years ago in the Silica Shale (Middle Devonian) of Michigan. I'm not super positive on an ID and was hoping someone here might have some thoughts. @Peat Burns @Misha @Tidgy's Dad? Thanks for any help.
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Hello, I'm considering this crinoid from the Silica Shale of Ohio, Arthroacantha carpenteri. From what I understand, the unique preservation of this site for these crinoids is a pyritization/pyrite replacement. This specimen seems to have sparkling up close, but it is not apparent from a distance. Does this one indeed seem pyritized? I'd like it if it's a nice, representative example. Thanks.
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A question about the brachiopods Paraspirifer bownockeri
Misha posted a topic in Questions & Answers
Hello everyone, I have been wondering about this for a bit but only now that I atually have one of these in my collections have I decided to ask this, All of the P. bownockeri I have seen have been pyritized and I wanted to ask why this is, I do not know of any other brachiopods like this because while there are some I have seen preserved in pyrite they are from areas where the rest of the fossils are also pyritized, from what I have seen its mostly just this species that is commonly found fully pyritized from this formation. The only thing I can think of is maybe they are found in a specific layer which is why they are the ones that are primarily pyritized. So my question is, what causes this? Also do these brachiopods come preserved in other mineral such as calcite? If anyone knows or has any useful sources I would love to hear it! Thank you very much, Misha- 7 replies
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This past weekend I was able to hunt in the Middle Devonian Silica Shale in Ohio for a couple of hours. I found a lot of great things, but I think this took the cake for me. It was my first good find of the day, and the only specimen I've found in 5+ trips to this site. I don't have my Silica Shale book with me right now, but I believe it to be Hyperoblastus reimanni. In situ Cleaned up
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I found this specimen in the Silica Shale (Middle Devonian) of Ohio this past weekend. It measures approximately 2cm at the widest point. I have not come across anything like it before. I'm getting a fish vibe but I'm not certain. Any thoughts? Front Back
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Brachiopods from the Devonian Silica Shale Formation, Sylvania Ohio
traveltip1 posted a topic in Fossil Hunting Trips
I found a variety of brachiopods in the Devonian Silica Shale Formation near Sylvania, Ohio, in mid-August. A few are a bit pyritized.
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I found this very compressed gastropod over the summer at the dump piles in Paulding, OH (Silica Shale, Devonian). I don't recognize it. Any thoughts? @Peat Burns @minnbuckeye
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Hey everyone! Happy to finally be making another entry. Over the last couple of weeks I've been reading Richard Fortey's "Trilobite" and thus itching to get back into the field and see some for myself. Driving from New York to Chicago I decided to make a pit stop at Ohio's Paulding Community Fossil Garden and try my luck at finding some eldredgeops fossils. Here's what the garden looks like when you arrive: You're basically wading through fossils step after step. Here's the best of what I found, excluding some nice surface-collected brachiopods I've been handing out to friends here in Chicago. I have a few questions about what I've found, if anybody could give me their input it would be very much appreciated!! A lot of little bits. Crushed Eldredgeops rana cephalon about 1.75" wide. What I assume is a juvenile Eldredgeops rana? Size is about that of a dime. Tried to get to the surrounding shale using a pin vise but yielded scarce results. I'd be really grateful for any suggestions from more experienced preppers! Small, nickel sized brachiopod with something that looks to be stuck onto it! Anybody encounter this before?? I would attempt to prep off some of this muck but I don't want to risk damaging anything. Is a pin vise enough? A brush and some sort of solution maybe? Thanks for looking! I'm in Chicago as I write this, and just this morning paid a visit to the legendary Dave's Down To Earth Rock Shop in Evanston. There are walls littered with incredible stones, ancient tools and fossils. Everywhere. Imagine my surprise when encountering a familiar face.
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I recently purchased some Mid Devonian silica shale pieces with trilo-bits from @connorp. And by recently I mean last month... last year..(January is always confusing that way). Just several small pieces with partial molts I'm using for practice prepping. So after picking at a few all year... one of them has gone from a practice piece to an almost show piece. 1st pic is the original sales pic with the piece circled. In it you can see part of the trilo-bit, but not really anything else. I got a nose w/ a partial eye (base only), bryozoa scattered about here & there, some tiny crinoid pieces and a thing I can't decide on. Pic labeled with a 1 is an overall shot, 2 is a close up of the nose, 3 is a bryozoa (I think) & 4 is the question one. The entire stone is 7.5 cm x 6.5 cm. Nose is 1 cm wide, the small bryozoa fan thingy is 0.5 cm wide & the question one is 2.5 cm long. I'm using a needle in a pin vise, fine scribe tip in another pin vise, dental picks & a stiff(ish) nylon brush with hydrogen peroxide, 3x led magnifying lamp & 10x loupe.
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Lafarge Holcim Cement Plant in Paulding Ohio continues to provide a near perfect solution between safety issues within a quarry and the desires of fossil hunters to check out a quarry's material. They graciously and continually provide fossil laden Silica Shale just outside of the quarry for us to play in ANYTIME we want!! Such was the case as I traveled back to Ohio for an "after Thanksgiving" Thanksgiving at my sister's home in Lima. I was able to spend a little over an hour picking up some representative fossils. Brachiopods abound as do trilobite pieces. I did manage a large sized, almost complete roller. But what I enjoy the most at this site is the epibionts frequently found on other fossils! Check out the inarticulate brachiopod, Pentrocrania, attached to a large brachiopod. It is unique in that its surface takes on the ribbing of the brachiopod underneath of it. A form of camouflage??? Neat for what ever reason it does this.
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On my way to Ohio to visit relatives, I was close enough to Paulding Ohio to take an hour or two to check out the Silica Shale piles so graciously put out by the La Farge Quarry. As always, it didn't disappoint! I do have a few fossils that I am a little unsure of. @Peat Burns Hopefully someone can help out. Mike First off, this one is HARD TO SEE. I photographed it 3 times and can't get it's subtle details to come through. I am 90% sure of bivalve. It comes to a point and the striations are along the growth lines, not the ribs. Second up is what I think is a piece of a rostroconch..... But is just a guess.
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For the better part of a year I have been meaning to meet up with Tony @Peat Burns and do some fossil collecting. I have never met him before but we have PM’d on numerous occasions and he has helped me with ID help on a few items. Here is Tony- Well today worked out well for a couple of reasons, first we set the clocks back one hour which made leaving a 5 am for the 4 hour drive not to bad. Second, I crossed into the Eastern time zone so when I drove back, I felt 1 hour younger. Third reason was that I had a trunk full of various fossils that I wanted to give him. The forth reason is that it was sunny and 37 degrees- good fossiling weather. And the last reason was that my wife was coming home from a 3 day trip to Puerto Rico to check on her father who is not doing good and it also allowed me to drive to the Hinsdale Oasis on I-294 and wait until her plane lands at O’Hare Airport, rather than heading home and driving back which would add another 90 miles onto the 450 that I already drove today. I am typing this report at the Oasis, these are great for travelers on our toll roads, you can get gas, all types of food and rest. So after 4 hours and 230 miles of driving I made it to the Paulding County Community Fossil Garden In Cecil, Ohio to do about 3 hours of collecting in piles of Middle Devonian Silica Shale that the LaFarge Quarry, which is right next to this area, dumps here from time to time for collectors and school groups to search thru. Here are some pics of the area and some of my finds that I took pictures of in the field. Here is a pic of Tony looking at something cool find. I found various brachiopods, corals and trilo-bits. More finds in next post.
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I found these at the Paulding Fossil Park. I originally dismissed one as a horn coral as they are plentiful there. On closer examination it doesn't fit the typical growth pattern of a horn coral, no cone shape, no growth rings around the circumference. It is 1-3/4" in length. Could it possibly be a tooth? The spike shaped item is 2" long.
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Found this at Paulding Ohio Fossil Park. This is the only one in 5-6 visits to this location. Is this a rare find?
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I found this thing when I was sorting through the haul from a recent trip to Paulding (Silica Shale, Devonian). I have no idea what it is. Only thing I thought of is some kind of fish bit, really just because it doesn't look like anything else from Paulding that I'm familiar with. Any ideas?
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@Peat Burns, This one is for you. I am staking my reputation (which doesn't mean a lot) on you to be able to ID this Paulding, Ohio unknown. Your info on species of Paulding mounds has been very helpful to me so far. Collected in early January.
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Date: Jan. 5, 2019 Location: Paulding, OH Formation: Silica Shale Time Period: Middle Devonian (Givetian) Species collected: *Bethanyphyllum or Heliophyllum *Cystiphylloides americanum *Aulopora microbuccinata *Stropheodonta demissa *Stropheodonta sp. *Megastrophia concava *Pseudoatrypa devoniana *Athyris sp. *Orthospirifer cooper *Mucrospirifer sp. *Limoptera macroptera *Eldredgeops rana @Nimravis
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I found these items while working through the calcareous shale my wife and I collected from Paulding Ohio this summer. This material is primarily from the Devonian aged Silica Shale. I found one and didn't think too much about it, a fragment of fish/trilobite/shell or something else perhaps. Then I found a second which looked similar and so I did some prep and was able to expose more of each piece. These are small (those are mm's on the scale) with the biggest one being about 10mm by 12mm and the smaller one a little over half that size. They don't look like anything I'm familiar with nor could I find any matches in numerous books or online sites. I know the pictures are not ideal and they are embedded in the rock, so nothing from the side or underneath (first two pictures are the same one). They are very dark in color like much of the trilobite material. Oh snarge, it just dawned on me. Are these hypostomes? I don't think I have ever seen one before. Maybe I answered my own question, but I typed all this already so I'm going to post it just to make sure. Thanks, any ideas would be appreciated. Now I see a thread from 2011, so yes, these are hypostomes, but I'm uncertain on which species it is from. Looking for examples from Eldredgeops and Pseudodechenella since those seem to be the genera present in the Silica.
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Here's a nice, large brachiopod I found at Paulding, OH, yesterday. The Silica Shale is rich in organics and lends itself well to dissolution with KOH, a strong base. Here is the "before" pic after cleaning the fossil with a brass brush. The remaining matrix is rock, not "dirt" and would take quite a bit of time to remove with a pin vice and air abrasion.
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Here is a prep series of a tiny Pseudodechenella lucasensis from the Mid-Devonian Silica Shale that I found in Paulding, Ohio, yesterday. Not complete, but not a common find, so I am very happy with what I got. I'm probably going to restore this by sculpting the genal spines, etc. 1. Farm Fresh 2. Roughly exposed with pin vice. 3. More cleaning with pin vice. 4. Final product after air abrasion with dolomite. 5. This is a tiny one...
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I spent the Holiday weekend in Port Clinton, Ohio visiting my relatives. On my drive to there, I made a slight detour so that I could visit the fossil site north of Paulding, Ohio. I must commend La Farge Quarry for their creation and upkeep of the park!!!!! They must, unlike most quarries, realize the treasures that lurk within their rock. The park consists of about 10 rows, 100 feet long of fossiliferous rock they provide for the public's enjoyment. Some of the piles are weathered and some are fresh. Certain species are better found in the weathered rock, others in the fresh. Look at both!! Here is a sampling of what can be found in a few hours of collecting: Brachiopods abound from small to large.
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