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Showing results for tags 'Silurian'.
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From the album: Nautiloid’s Eurypterids and other Silurian fossils
Assorted Eurypterus remipes and Pterygotus sp. parts Upper Silurian Bertie Group Fiddlers Green Formation Phelps member collected 8/22/20-
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- arthropod
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What type of mollusk is this? Oyster? Bivalve?Internal mold. Silurian Thanks for any help.
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Halysites 'chain coral' from Silurian in Wisconsin, acid treatment
traveltip1 posted a topic in Fossil Hunting Trips
I found this rock containing a Halysites 'chain coral' in the Silurian of Wisconsin. I soaked it in diluted muriatic acid for a few hours to partially dissolve the matrix and reveal the silicified coral fossil. Photos are before and after acid treatment.
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- chain coral
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I found this pretty little chain coral in southwest Michigan glacial drift a couple of days ago. I'm interested in whether it's possible to narrow the ID down between a Halysites species or another genus, like Quepora. My simplistic understanding is that coenenchymal tubules would indicate a Halysites species, so that's what I've been focusing on, although I know there are many other indicators, like size and shape of corallites. size of ranks, shape of luminae, structure of longitudinal tabulae, etc. This piece is probably too silicified to tell without thin sections, anyway, but I thought I'd throw the pics up, in case there's a coral person here who can help me interpret any diagnostic features they see. (The tape measure I tried to hold up in the last photo is cm) Many thanks!
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Greetings forum members! I was looking through the last rocks from my latest fossil hunt and I found this interesting piece. Its a partial Pterygotid body segment! I had broken it and I thought I had thrown it back but apparently I kept like 80% of it. I glued it back together as best I could last night and was looking more closely when I found something interesting. I’m not completely sure but I have a hunch that the one end of this fossil might have predation marks from a larger Pterygotid. Could this be true or did it just break weird when it was molted? I was wondering if anybody on the forum could help me out with this. Thanks for looking! Owen
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Hello all! As I’ve been taking a closer look at some of the rocks from my previous fossil hunt on August 22, I have been finding some pretty cool fossils that I overlooked at first. I am going to show some of the more interesting ones on this post. Enjoy! ~ Owen
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From the album: Nautiloid’s Eurypterids and other Silurian fossils
A mouth part from a juvenile Pterygotid Upper Silurian Bertie Group Fiddlers Green Formation Phelps Member Herkimer County, New York Collected 8/22/20© Owen Yonkin 2020
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From the album: Nautiloid’s Eurypterids and other Silurian fossils
Partial Eurypterus remipes with three body segments, a partial prosoma, the beginnings of both swimming legs, and the backs of the feeding parts. Upper Silurian Bertie Group Fiddlers Green Formation Phelps Member Herkimer County, New York Collected 8/22/20© Owen Yonkin 2020
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Going through my trip bucket from a June visit up through the Silurian of the Bruce Peninsula, I encountered what I suspect might be pentamerid brachs, but wasn't entirely certain. Each of them average about 4-5 cm. Although the photo does not capture the "shine" well, the black that outlines some of them, including some of the bits, is very high gloss (like obsidian or some forms of tar). These were unlike any of the surrounding Eramosa Fm, so likely an erratic of sorts.
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- brachiopod
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From the album: Nautiloid’s Eurypterids and other Silurian fossils
Eurypterus remipes partial swimming leg Upper Silurian Bertie Group Fiddlers Green Formation Phelps Member Herkimer County, New York Collected 8/22/20© Owen Yonkin 2020
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From the album: Nautiloid’s Eurypterids and other Silurian fossils
Eurypterus remipes disarticulated specimen Upper Silurian Bertie Group Fiddlers Green Formation Phelps Member Herkimer County, New York Collected 8/22/20© Owen Yonkin 2020
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From the album: Nautiloid’s Eurypterids and other Silurian fossils
Eurypterus remipes telson Upper Silurian Bertie Group Fiddlers Green Formation Phelps Member Herkimer County, New York Collected 8/22/20© Owen Yonkin 2020
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From the album: Nautiloid’s Eurypterids and other Silurian fossils
Eurypterus remipes body segment Upper Silurian Bertie Group Fiddlers Green Formation Phelps Member Herkimer County, New York Collected 8/22/20© Owen Yonkin 2020
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From the album: Nautiloid’s Eurypterids and other Silurian fossils
Eurypterus remipes partial cephalon Upper Silurian Bertie Group Fiddlers Green Formation Phelps Member Herkimer County, New York Collected 8/22/20© Owen Yonkin 2020
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Hi Forum members, Yesterday I went to a spot in Herkimer County in search of Eurypterids! This spot exposed the Fiddlers Green Formation of the Upper Silurian Bertie Group. I had never found a Eurypterid so I was excited to go, and I had heard this was a productive spot. I got there and the first rock I looked at had an exploded eurypterid on it! There were eurypterid bits and pieces all over the place. Eurypterids seemed to be much more abundant at this spot than I thought they would be! I only got to stay there for a half an hour but managed to track down a few nice finds. The rock at this locality is hard like concrete and is pretty much impossible to split (especially the freshly weathered out material). All of my finds came from surface collecting in the weathered out rocks. Thanks for looking! Owen
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- arthropod
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I recently collected at an exposure of the Rochester and McKenzie Formations in Maryland. The ostracod typical of these formations is Kloedinella. While I did find a lot of those ostracods, I also found these two fossils. My initial guess is that they are of a different ostracod, Leperditia. I tried to Google to identify if Leperditia can be found in these Formations but I did not have much luck answering that question. What do you all think? Any help is greatly appreciated.
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Just got back from a 5 day trip to western NSW where we visited a number of sites, some of which we had not visited before. Will post more photos and information over the next few days as I have a lot to photograph, but here are some field shots from day two (our first collecting day)... Our first site was located near Grenfell and is known for its excellent Devonian fish fauna, including placoderms and sarcopterygians. While not as well preserved as the nearby Canowindra site, these are collectable which is a start . We were only given a vague site on a hillside located on private property, so once we had permission to access the site the next issue was finding where the fossil bearing layers were. This involved climbing a very steep hill and breaking open any rocks we saw, and after finding evidence of placoderm plates the next task was to figure out where they originated. A number of fossil bearing layers were found and it seems the material is very extensively distributed, presumably occurring throughout the surrounding hills as well. Here are some photos of one rock face we worked and the terrain - There were a number of rocks with exposed fossils on them, for example this one which is covered in ornamentation from placoderm plates. And here is a field photo of a partial Sarcopterygian(?) jaw, my thumb is on the left for scale.
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Help with ID'ing unknown frond-looking fossil from Silurian Waldron Shale
TK421 posted a topic in Fossil ID
Hello! I was wondering if you guys could help me ID this fossil. I found it in the Waldron Shale (Middle Silurian) collecting piles that the Falls of the Ohio State Park (SE Indiana) sets out for guests to rummage through (they get their shale piles from the Sellersburg Quarry, Sellersburg IN, Clark Co). I wasn't sure if it is part of a crinoid, burrows, or some sort of frond-type bryozoan or coral. I have August F. Foerste's Silurian Fauna of KY document but didn't see anything in his figures that caught my eye. The ruler in my photo shows the centimeter side. The true color of the shale is more blue-gray but I have a desk lamp with a warm white bulb on it which is giving the pic a false yellowish hue. Thanks in advance for your help and expertise.
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I'm curious what may have caused this burrow-like hole in dalmanitid eye? The eye popped off while I was prepping it availing a look inside. Microbes, worms, decay?
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This rock has me puzzled. The sides look like they might be the laminae of a stromatoporoid. The top of the rock though, lacks any trace of mamelons and the wavy lines between them that I typically see on stromatoporoids. Instead the rock is full of Cheerios ;-). So I'm wondering if this is something totally different. Maybe geological? Oddly preserved oolites? But then, what are the layers visible on all the rock's sides? Dimension: 1.5" long. TIA to all! Detail of top: Side:
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- lake michigan
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Made a trip last week to try my luck at a local Wenlockian spot. It's the type of locality where you must suffer and work hard to find good fossils and sometimes leave empty handed. A good stress reducer. Prep Illaenoides triloba, measures 5cm Thanks for looking and stay safe during these troubled times.
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Just wondering if anyone may have any idea as to what these are, found today in Wenlock Edge, which is majorly silurian limestone. The first five are all of the same piece. Secondly - longshot, but could tis be a tooth? And lastly, is the small spiral, a sort of Gastropod? TIA
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Hi everyone! We are newly interested in fossils after finding that our home, Manitoulin Island, is basically all fossil. We are looking forward to sharing our finds with you and with your help learn along the way. Thanks!
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So I have heard on multiple occasions of a silurian outcrop that happens to be by a waffle house somewhere around Chattanooga TN. Would anyone happen to know where it is so I can relieve my long-unscratched fossil itch and take a (responsible) look? PM me if you'd like. Thanks!
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Terrestrial Millipede-like creature lived in Scotland 425 million years ago
Oxytropidoceras posted a topic in Fossil News
Scientists find oldest fossil of a land animal Millipede-like creature lived in Scotland 425 million years ago, Thomson Reuters, Jun 01, 2020 https://www.cbc.ca/news/technology/oldest-land-animal-1.5592917 M. E. Brookfield , E. J. Catlos & S. E. Suarez, 2020, Myriapod divergence times differ between molecular clock and fossil evidence: U/Pb zircon ages of the earliest fossil millipede-bearing sediments and their significance, Historical Biology Received 26 Feb 2020, Accepted 27 Apr 2020, Published online: 15 May 2020 https://www.researchgate.net/publication/341358567_Historical_Biology_Myriapod_divergence_times_differ_between_molecular_clock_and_fossil_evidence_UPb_zircon_ages_of_the_earliest_fossil_millipede-bearing_sediments_and_their_significance_Myriapod_diver https://www.researchgate.net/publication/341420627_Myriapod_divergence_times_differ_between_molecular_clock_and_fossil_evidence_UPb_zircon_ages_of_the_earliest_fossil_millipede-bearing_sediments_and_their_significance https://www.researchgate.net/profile/Elizabeth_Catlos https://www.tandfonline.com/doi/abs/10.1080/08912963.2020.1762593?journalCode=ghbi20 Yours, Paul H.-
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