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Showing results for tags 'Devonian'.
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Two For One- Platystoma Gastropods from Glenerie
Jeffrey P posted a gallery image in Member Collections
From the album: Lower Devonian
Platystoma ventricosa Two Platycerid Gastropods (attached- 2 1/4 inches across) Lower Devonian Glenerie Limestone Tristates Group Glenerie, N.Y.- 2 comments
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Today I was supposed to go Fossilhunting in the Silurian Rochester Shale, but plans got changed. All of the people I was supposed to go with came down with one of the many illnesses going around CNY. One of my friends, Tim, was going to my favorite Devonian site so I decided to go with him. My friend Tim is also a member of my local club and I have known him about 20 years. We met up at one of the thruway exits and he followed me to the site. The day was great, without a cloud in the sky. It was still a bit chilly until the sun got higher. Eventually i was able to take my long-sleeved shirts off and put on my t-shirt. Another club member named Sue, who lives only about 5 minutes from the site showed up unexpectedly after about an hour or so. So the 3 of us chatted it up for a couple hours. The finds were pretty typical of the site and many of the usual suspects showed up. I was very happy to find a complete Eldredgeops roller, which has a disarticulated pygidium, right of the bat. I was even more happy when just a short time later I found another Dipluera which looks so similar to the one I found last week. It was partially covered exactly like last week's that at first I thought it was the negative of that one. After a closer look I realized it was a different one all together. I also found a couple Greenops, that might turn out ok as well. All in all it was another great day with good company. I am really liking how 2024 is turning out for me fossil wise and I hope this streak continues. I hope everyone is doing well.
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- bivalves
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Sacramento Mountains - New Mexico, Ordovician - Mississippian exploration
Kato posted a topic in Fossil Hunting Trips
This was purely an exploratory hike to a remote area with no expectation of finding much. In that regard, I was not disappointed. I'd previously last covered some of this ground about 5 years ago and had forgotten how formidable it was to get into. The walk in a rocky canyon bottom for about 2.8 miles before taking another rocky side canyon ending at an Ordovician-Silurian dry water fall. Approaching the base of the dry water fall with Ordovician bedrock that was pretty much non-fossiliferous. At the base of the dry water fall to get a nature shot. This looks like it should be climbable and, perhaps it is, but I'm getting a bit too long in the years for such risky business. I took a bushwhack side trip up a steep hill. Fortunately, it had rained recently and the otherwise loose scree was a delight. Even if one could climb the lower falls they are faced with an unclimbable Silurain vertical wall. A view of that dry fall from the other side.
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- devonian
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Any idea what this silicified Devonian Martin Formation fossil from the Verde Valley in Arizona is? The holes are 0.6-0.7 mm across. Big piece is about 10 cm across. Similar pattern of holes is on back side
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Today was a totally awesome day for fossilhunting here in Central New York! The weather was great for March and I had great company. And I haven't even mentioned the fossils yet. I had made plans to get out on a Devonian dig with my friends Stephen( @Buffalopterus ), Trevor, and Gary. I got to the site around 8am and was delighted that it was nice and Sunny. I was surprised when another car showed up and it turned out to be Eric, ( I can't remember forum name). The other guys showed up around 10, followed by Eric's friend Cassie. I really enjoyed everyone's company we all were joking around and laughing the entire day. As the sun got higher it kept getting warmer. And it seemed that everyone was finding stuff. Trilobites were very abundant today. Everyone found multiples I think 5 mostly complete Dipluera's were found today even though they were all small. I lost track of how many Greenops were found, but it was alot, and there were a couple Eldredgeops in the mix. I will say the the Greenops that were found by Trevor were the biggest and nicest ones that I have ever seen from there. He probably found the most Trilos out of everyone today. Lots of nice Brachs, Bivalves, and Gastros, as well. Just a great day all around. Here are my finds. And yes I got another Dipluera!
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- bivalves
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Fossil here is in devonian age strata of Oklahoma, I did not think there were many lobsters and stuff, could this just be geological
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just prepping this Lungfish from famous Achanarras-Quarry. Comes from an old collection, partly prepped. Did not expect that the fins are preserved, but they are... what do you think? Is it Dipterus (what I think, too), or Pentlandia? (green rim does not belong to the fossils, prepmarks what has to be removed next days Lenght is 16 cm, approx. 6,5 inch
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Hi everyone! I visited an exposure of the Milwaukee formation within Milwaukee city, Wisconsin this weekend. Found lots of brachiopods, corals and bryozoans, and brought some rocks home. Then today I decided to smack some of them with a hammer - and this trilobite pygidium emerged out of nowhere. I don’t know a lot about inverts - can anyone help with the ID please, if it’s identifiable at all? I’m pretty sure it is from the Lindwurm member of the Milwaukee formation (Givetian - Middle Devonian). Thanks!
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From the album: Invertebrates
Rhadinocrinus sp. Early Devonian Emsian (early) Kaub Formation Bundenbach Germany -
I saw a post on facebook that someone was looking to get rid of some fossils they had collected locally so I arranged to meet up this afternoon. Most of what was being offered were carboniferous fossil ferns from St Clair and they had some beautiful examples from the site that has been closed to collecting for several years now.
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I dissolved limestone from Michigan in acetic acid and got some interesting things, among them these. The source for the limestone is unsure of their exact age. Ordovician-Devonian. Any ideas?
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Hi all. This is from Swatara State Park in PA (ordovician/devonian). Many shell imprints, which are hard to see the way I took the photo, but my son and I were wondering what the little starfish would be. It's very small, maybe 5mm. Anyone have an ID? Thanks so much!
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I found these at the same location. Petersburg wv in shale/ seems too cool to be true.
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A couple weeks ago I was on a fossilunt with my friend Stephen to a Devonian locale near Canandaigua Lake. This was a new spot to me, but is a known spot located on private property. This area is known for crinoids and large Eldredgeops, some up to 3 inches. I went with Stephen and his friend Gary. We arrived shortly after 9am. We parked in the owner's drive way and had a fairly long walk across to cow pastures to get to a creek located in the treeline at the back of the 2nd pasture. This is a Hamilton Group Moscow Formation Middle Devonian site. Crinoid pieces were very abundant in certain layers as well as trilobites in other layers. I found a fewtrilos mostly complete but covered in matrix. Gary found a decent roller. Some rather large corals were found by Stephen. I enjoyed collecting some Naticocema lineata gastrops as these were new to me. I didn't bring a ton of finds home but I was happy with my haul. I am posting pics of my finds, but will post more when I have a chance to take other pics. Some of my finds do not photo well.
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- bivalves
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Hi, I'm having a brain lapse and need help identifying the form of iron I'm seeing. Some of the nodules I found seem to have a cubic structure much like standard pyrite but others are perhaps suggestive of hematite in its many crystalline forms? Also, some of the crystals are a glassy reddish color and slightly gemmy in appearance while others are completely black. Apologies for the shots. They were taken outside in a shady area but some of them show a yellow reflectance on the top facing reflective faces. Only the 3rd shot of the black nodules actually has yellowish and red staining. These were found coincident to a formation known as the Sly Gap formation which is a Devonian formation here in southern New Mexico. I believe I recall reading that that formation had nodules like this. The nodules range in diameter from 10mm to 30mm.
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Brachiopod with attached Codiacrinus schultzei
oilshale posted a gallery image in Member Collections
From the album: Invertebrates
Brachiopod with attached Codiacrinus schultzei Early Devonian Emsian (early) Bundenbach Hunsrück Germany- 1 comment
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Trace burrows.. species? Central NYS, glacially transported cobble from till. Likely constrained to upper Devonian to mid Ordovician. Siliciclastic, clast supported, fine sand to silt, little clay, moderately well sorted, sub-angular, quartz, feldspars and lithic fragments, highly porous matrix, 6" on long axis. Thanks in advance..
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From the album: Mahatango Formation
Schyukill county, Niss Hollow member? -
I have another very small fossil from the Moscow Group at the Penn Dixie Park in Erie County New York. I believe this is the long-spined ostracod Aechmina, but I am open to other suggestions (trilobite piece, brachiopod spine, etc???). This is very small as you can see in the measurements below (less than 1 mm) and is in the matrix, I have scraped away as much matrix as I dare at the moment and to me the lower edge in the pictures looks like it is a natural (unbroken) edge and is the end of the fossil. I would like to expose a bit more at the top, where the hinge line should be if it is an ostracod, but have not dared to do that yet due to small size and potential fragility. @Acryzona has shown a specimen of this genus from the Devonian at Paulding (https://www.thefossilforum.com/gallery/image/57600-aechminajpg/) and Hall in a very old publication reported the genus from the Devonian of New York (the old drawing did not look much like this specimen), but I have not found any specific mention of it from Penn Dixie. Any Penn Dixie or ostracod experts, or anyone else care to voice an opinion? I appreciate all suggestions.
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World's earliest fossilised forest discovered in Minehead, Somerset, England
Oxytropidoceras posted a topic in Fossil News
World's earliest fossilised forest discovered in Minehead, Somerset By Greg Brosnan, BBC News Climate and Science, March 6, 2024 Earth’s earliest forest revealed in Somerset fossils By Sarah Collins, University of Cambridge, March 7, 2024 THe open access paper is: Davies, N.S., McMahon, W.J. and Berry, C.M., 2024. Earth's earliest forest: fossilized trees and vegetation-induced sedimentary structures from the Middle Devonian (Eifelian) Hangman Sandstone Formation, Somerset and Devon, SW England. Journal of the Geological Society, pp.jgs2023-204. Yours, Paul H.- 2 replies
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Here is a quick and (hopefully) easy question for all you Penn Dixie (New York, Erie County) or bivalve experts out there. In going through some of the material I collected last summer, I came across this very nice, but small (1.1 X 1.0 CM) bivalve. It looks most like Lunulicardium eriensis figured on page 160/161 of Wilsons Field Guide to the Fossil of New York. But the book lists it as from the Upper Devonian Canadaway Group and I can't seem to find any reference to it (after a quick search) from the Middle Devonian Moscow Group present at Penn Dixie. My question is: is my ID incorrect or did I just not dig deep enough to find reference to it from Penn Dixie or the Middle Devonian? Thanks for any help. @Fossildude19 @Kane, @Jeffrey P and any others.
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Hello to all. The Acastella trilobite from my own collection. Well preserved. I tried to get close-ups of the eyes and some small details. Place of discovery: outskirts of the city of Kamenets-Podolsky, Khmelnitsky region of Ukraine. It was not possible to determine the exact age (Silurian or Devonian). Have a nice day 1.mp4 3.mp4 4.mp4
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Dear everyone, I would like to hear your ideas on preparing a fish fossil from Turso, Scotland (Devonian). I am unsure of the best approach. The fossil was embedded between two layers of hard rock. The impression on one side is not entirely clear; the other side is not entirely complete (90% is there). Additionally, fish fillet has fallen out, and I have many loose pieces such as the fins, which are very thin and have matrix (grains) attached. I have been contemplating soaking the small loose pieces in acid (5%) and then rejoining them. For the larger pieces, I plan to reattach them and clean them using an air scribe and sandblaster (2.5 mohs). Another idea is to place the pieces in their original positions and create a replica on the opposite side using epoxy or cement, although this doesn't seem aesthetically pleasing to me. The tools at my disposal include: - Magnifying glass - Air scribe - Engraving pen Dremel - Dremel - Sandblaster - Sulfuric acid 100% - Cleaning vinegar I appreciate your input and suggestions. Kind regards,
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From the album: Invertebrates
Encrinaster roemeri Schoendorf, 1910 Early Devonian Emsian Kaub Formation Bundenbach Rhineland Palatinate Germany -
A few weeks ago some friends and I visited a site near Braidwood in southern NSW (3 hours south of Sydney) for middle-late Devonian fish. The site was first published in Ritchie (1984) with the description of Placolepis budawangensis, a phyllolepid known only from this locality. This species is one of the two most common here, with the other being Bothriolepis longi (see Johanson 1999). So far, only these two species have been described from this locality but acanthodian spines and sarcopterygian scales are also known. All fish fossils from this locality occur in within a 75cm band of red siltsone and are mostly just disarticulated plates, but the P. budawangensis holotype is still fairly well articulated. The plates of both species are very recognisable, the Placolepis usually have lovely parallel ridges whereas the Bothriolepis are covered in tiny bumps. Some photos of the siltsone band with some fish plates exposed on top. Peter did a great job on this hole, it's not easy work! The specimens from this locality are quite weathered, so the bone is usually quite poor and doesn't split well. They still look nice, but I chose to dissolve away the bone in hydrochloric acid to latex the cavity for photography. Here are some as found: Placolepis: Bothriolepis: Some bone in cross section (the horizontal black dotted lines): Here are some latex casts of specimens after acid preparation. The latex is blackened with ink, then whitened with ammonium chloride for high contrast photos. Much easier to make out features in these than the unprepared specimens! Bothriolepis longi plates and pectoral fins (compare with figures in Johanson 1999): Placolepis budawangensis: Sarcopterygian scale(?): No idea on this one! After the fish site, we quickly stopped in at a road cutting which yields occasional Devonian plant fossils. Nothing too exciting, but still nice to find some Devonian plants! That's all for now, I might post more ammonium chloride photos when I take the next batch. Hope you enjoyed!
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- australia
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