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Showing results for tags 'ordivician'.
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Back in April 2017 I posted pics of what I thought was a unique bryozoan encrusted horn coral.... Since then I have come across more while collecting in SW Ohio that I'd like to share. And, yes, the prep can be extensive. The first one, there is no real top/bottom or side view. It is 7 cm across x 10 cm "tall" This one is 4.5 cm across x 4.5 cm "tall". I believe the bryozoan on the following is Constellaria florida This one is 5.5 cm across and 6 cm "tall" This last one is my favorite. I finished prepping it in early March. I think the layering of the bryozoan is amazing. It is 7 cm across x 9 cm "tall" x 4 cm "deep". The horn coral is broken.
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If you are a fossil collector in an Ordivician area, the Rafinesquina is a pretty common find. Here are pics of some typical pieces from my collection. The R. ponderosa (middle) are typically 4 to 5 cms wide. Below is the view of them from the side, showing their basic difference in appearance. Late last summer I came across 3 brachiopods on a maybe 30 degree roadcut south of Dayton, OH that are similar to the Rafinesquina. All three were within 2 feet of each other and broken "from the middle out" as if they had been stepped on...or maybe run over by a tractor mowing the roadcut? They were huge. I've never seen any so big. Not even pieces. Although they were mostly missing the tips of their hinge line they were still 7.5 to 9 cms wide. Here they are above and below my initial trio. But they aren't just wider, they're just flat out bigger. Here are a side and a front view of one alongside a R. ponderosa. I have found the "typical" Rafinesquina in other sites both north, south, east and west of this site. Within miles and up to 20 miles of this site and at higher and lower elevations. I've gone back to the site and there were no others, nor any on the other side of the road. Have any other Ordivician collectors come across these before? I haven't seen any mentioned anywhere. Although the literature disagrees, are these actually what the Ponderosa looks like?
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I haven't seen hardly any Ordivician-related posts for a while so here's my input. I was out collecting yesterday off Interstate 75. Nothing all that good had occurred until I found this flexy... Nearly 5 years ago I found the chunk of rock (in the middle of my hand) that appeared to contain some amount of trilobite I never expected much so it was ignored until this past Feb when I finally prepped it. I was happily surprised at what finally appeared. It has a few blemishes and is nearly 100% complete.
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- flexicalymene
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References: Timothy Paton, Carlton Elliot Brett (2019) Revised stratigraphy of the middle Simcoe Group (Ordovician, upper Sandbian-Katian) in its type area: an integrated approach. Canadian Journal of Earth Science. DOI: 10.1139/cjes-2018-0023 Kammer TW, Sumrall CD, Zamora S, Ausich WI, Deline B (2013) Oral Region Homologies in Paleozoic Crinoids and Other Plesiomorphic Pentaradial Echinoderms. PLoS ONE 8(11): e77989. doi:10.1371/journal.pone.0077989
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I found this plate near in the upper decorah formation Minnesota (Ordovician period limestone). These chunks are frequently littered with trilobite bits and fragments but this lookk a little odd to me. It has a "knob" or bump structur on one side and a gradual bend on the other. Its still partially covered by coral and debris but most of it is exposed. Any ideas?
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Hello! I found this odd looking fossil the other day on a river bank in Toronto after splitting the shale. It seems to be possibly be a coal imprint of some sort. Not too sure what it might be. Let me know what you guys think: Thanks for the help!! -Em
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Here's a specimen I picked up last year from the St. Leon, Indiana, road cut. The site is late Ordovician in the Waynesville formation. My guess is that it's a trace fossil that shows the convex hyporelief of two trilobite burrows. Each borrow is approximately 4 mm long, and is 2 mm of the other edge of one burrow to the outer edge of the other. In the second image, you'll also see what I believe could be pygidium or cephalon impressions on the left side, about two thirds down.
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Hi all! I managed to go on 3 large fossil hunting trips this weekend and pulled in easily the BIGGEST haul so far with the most variety as well! The first two pictures were from Mimico creek and the rest were a mix of Humber river and a separate section of Mimico creek. I managed to pull in my second trilobite from the area so that was very exciting! Also pulled a bunch of stuff that I was not able to identify: /\ This was the haul from last Friday night /\ This is the trilobite I found!!! Very excited to have a second one - its been a while since the last one I found /\ This was the full haul for the weekend trip at Mimico and Humber /\ Some Orthoconic Nautiloids as usual. Although it seems that this isn't just the same species I usually find as some of the patterns were much smoother than what I usually find A couple decent looking Crinoid stalks /\ /\ Lots of different shells this time, with a nice range of lined shells as well as 'mussel' looking shells (don't know the scientific names for these ones yet - sorry :/) /\ A close-up of the real nicely defined deathbed of TONS of shells! Unfortunately the hammer I used for cracking bounced off this rock and mashed my thumb in so that wasn't very fun. But its healing up nicely so I'd say it was worth it haha /\ Variety different sizes of coral (if you guys could help me identify which type that would be sweet!) /\ These were the weird ones. I'm not even sure if these are even fossils but I figured I might as well take em just in case - better safe than sorry!! (I am posting these two in identification later!) I was very proud of this haul! Lots of diversity compared to the usual hunt which is nice because I'm kind of getting a little tired of the mountains of Nautiloids we have piling up in the collection Let me know what you guys think of these ones!!! -Em
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Location: Etobicoke creek, Toronto, CA Date collected: July 27th, 2019 Hello! I pulled in a whole bunch of fossils along the Etobicoke creek (a little bit further north compared to my last trip - almost same location though). LOTS of Orthoconic Nautiloids (as usual), a couple different bivalves and a few crinoid fragments. This is the nautiloid haul. The top right one doesn't look like much but there are about 5 or 6 nautiloids embedded in the matrix! I'm considering learning how to clean up the fossils so that I can show it off in all its glory! These are the bivalves and other stuff collected. These are two separate MASSIVE chunks of monster Nautiloids (~5cm in diameter) - hopefully I can clean this one up as it would make a veryyy nice shelf piece! Closeup on the full bivalve, I've never really found a complete bivalve with both shells in one clump like this before (correct me if its actually just a lame rock - I could be wrong). I thought this one was really interesting: notice the dark brown, lined layer just under the rocky outer layer? I've seen a good lot of Orthoconic Nautiloids but I haven't seen a layer like this before. Maybe its nothing but I thought it might be worth looking into - let me know if you guys have any info, or what you think! Anyways thats what I pulled in this past weekend! I'd say its a decent haul, not my nicest stuff but still a good lot. -Em
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- aorthoconic nautiloids
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In a recent trip to the Candelaria Mining district of west central Nevada some rocks that suggest fossil forms where found. Is this a fossil? How big where coiled Nautiloids in the Ordivician? Is this more likely Permo-Triassic? I have more pics but the file size limit. Maybe another post later. The rock formations in the area per Mineral, Deposita 29, 318-329 (1994) MINERALIUM DEPOSITA O Springer-Verlag 1994 The Candelaria silver deposit, Nevada - preliminary sulphur, oxygen and hydrogen isotope geochemistry the basement consists of Ordovician cherts of the Palmetto complex; this is overlain unconformably by Permo-Triassic marine clastic sediments (Diablo and Candelaria Formations); these are structurally overlain by a serpentinitehosted tectonic melange (Pickhandle/Golconda allochthon); all these units are cut by three Mesozoic felsic dike systems. The local rock descriptions are obviously simplified. Palmetto Basin Assemblage - Shale, chert, quartzite, greenstone, and limestone Nolan Belt - Shale, chert, phyllite, quartzite, and limestone Diablo Siliciclastic Overlap Assemblage - Sandstone, siltstone, limestone, conglomerate, and carbonaceous limestone Siliciclastic Overlap Assemblage - Shale, sandstone, and limestone Candearia FM Golconda Terrane - Basinal, volcanogenic, terrigenous clastic, and minor carbonate rocks Siliciclastic Overlap Assemblage - Conglomerate, sandstone, siltstone, and limestone Siliciclastic Overlap Assemblage - Shale, sandstone, and limestone Shale with interbedded sandstone and minor limestone characterize the Lower Triassic Candelaria Formation (Ferguson, Muller, and Cathcart, 1954).
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Alrighty. Havent been around much as I havent been doing a lot of fossil stuff of late. But, I was going through stuff I piled up on the porch from my KY/OH trip last year and came across this. I honestly dont remember finding it. You would think I would as it is only the second trilobite anything from that trip. Its not marked from OH, so I am presuming I got in KY. What particular bug would this be?
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I've had this for several years but just got around to prepping it. I believe I've seen similar on the site in the past few years but don't remember what it is.
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Wanted to take advantage of the good weather and went to the creek on my farm to see if I could find anything good. The creek is located on a farm in Northern Kentucky, located in a small valley amongst the hills. As soon as I reached the creek and knelt down, I spotted this beautiful specimen and instantly recognized the shape and tapering. I can’t find any septa on it though. I find an abundance of bryozoans, brachiopods and crinoid stems. Few weeks ago, found a fragment of orthocone and had it verified on here. This is only my second and so are pretty rare on our land. Just wanted to show you all, make sure 100% it’s the real deal since you all know much, much more than I. Don’t want to keep a rock or petrified ice cream cone around.
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Found this while searching the creeks located around my farm. I find a lot of bryozoans, brachiopods, crinoid stems and that’s about it. Never have found a fossil like this around here before, though I know Northern Kentucky has found orthocone fossils before. Interested in what you all think!
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Took a road trip today and although it was only 28 degrees found a few interesting items. Any help identifying, even a rough direction to look would be appreciated. 1 and 2 were found at Beaver Lake in Arkansas. If I read the map correctly, which is always iffy, they should be Ordovician in age. Wondering if I should break into the squarish looking piece (#1) to see what it contains. 3 and 4 were found just across the Missouri line from Grove Oklahoma. I believe the area is Late Pennsylvanian. The limestone (3) looks like it contains traces of water worn chrinoids(?). #4 May just be a water worn rock but maybe a man made fetish? The hole goes all the way through and would make a great hanging piece.
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Found these rolled fossils in the Decorah Shale, St. Paul, MN. Tan colored and measures 2.0 cm long by 1.2 cm wide. The broken piece looks to have piece of Trilobite with it. Thanks for your help.
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These two fossils were collected 2 years ago in the bromide formation in the Arbuckle mountains of Oklahoma. Does anyone know what they are?
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From the album: Fossil Collection
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Hey folks. My son and I will be going on a fossil collecting/USAF museum trip this weekend. We plant to go down to KY and collect. We are then going to head up Rte 62 to 68 which runs through Mt Orab. We all know the awesome trilos that come from that area. My question is this. Where in the area does one go? Just hit road cuts? If so, which particular roads? Any other tips as locations anywhere along that route would be appreciated. Thanks!
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10 SW Ohio Ordivician mini-collections to trade
hrguy54 posted a topic in Member-to-Member Fossil Trades
I would like to expand my overall collection. I have collected a ton of SW Ohio Ordivician fossils over the years. I believe that most non-Ohio collectors are unaware of how great this area is for collecting. I'd like to get other specimens from other areas. I have 10 "mini-collections" (samplers?) made up of typical SW Ohio fossils, minus the trilobites (they aren't really so widespread). The collections (similar to that pictured below) will include 2 horn corals (one with beekite), a gastropod, a cephalopod, the top valve of a rafinesquina, and 6 complete brachiopods...a hebertella, a vindlandostrophia ponderosa, 3 different kinds of lepidocyclus, and one of the following... a glyptorthis, a plaesiomys, or a retrorsirostra (I say one of these three because I struggle to tell them apart). I would like to trade to different people from different areas other than SW Ohio/No KY/E Ind. Or from the Devonian in NE OH and around Penn-Dixie...I'm pretty good on those already. All pieces will be in very good condition, prepped and ready to go. I would like the same in return. Just because I'm offering 11 pieces doesn't mean I want 11 from you....I want a good quality representation of what is commonly found in your area...we can discuss/negotiate it. Of course, send a photo. If you want to suggest other trades/sales I'll listen. Right now I will not consider overseas shipping. PM me if interested. -
Back at the end of 2015 I posted about an Early Christmas present...went hunting on a ridiculously warm Christmas Eve at a roadcut near an exit on I75 between Dayton and Cincinnati. Found some Flexiycalymene trilobites, RafInesquinas, and Cephalopods - Orthocones. That spring I went to the other side of the highway and found some more of the same plus these trilobites: I then decided that I would visit each of the roadcuts between the I675 and the I275 interchanges. This has taken me until this past May...about a year. The one closest to Dayton was pretty disappointing. I picked up a few nice Strophemans, a RafInesquina, a partial Leptaena, and a few brachs (right of the coin below) I was unable to identify...there were a ton of those. I went back to the initial interchange but went to the exits at the south end. Google maps said it was about 70 feet lower than the north exit ramps I was not expecting what I found.... It was a Vinlandstrophia Ponderosa mecca. Both sides of the highway as it turned out. Here are some from one side. The other side had nearly as many. Some broken and showing nice geode centers Along with a nice array of Orthocones, RafInesquinas, Gastropods and even a few Horn Corals. I've never found horn corals along side the Vinlandstrophia Ponderosas. The next stop, slowly getting closer to Northern Cincinnati, was a very exciting spot not only Cephalopods and RafInesquinas but some unexpected Flexicalymene trilobites: Including the largest "roller" I've ever found (2 views)...As big as a quarter. I had to prep it as soon as I got home. As I got to the last roadcut before I275 I didn't know what to expect. No 2 consecutive were the same. Even the same exit was different at north and south.
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Found this in a creek bed in Hamilton Co. Ohio, Ordovician rocks primarily. I thought it was an animal bone or what, I don't know. After cleaniing it and putting it under some magnification it appears to be either a plant stem thing or some crinoid type animal. What think?
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We met up with Bev of Bluffcountryfossils.net and hit the back roads for a full day of sightseeing, site seeing and hunting in the ordivician rocks of the Galena Formation. We came out of it with even more knowledge than she shared on the group tour the week before. She did a fun write up on her adventure blog with pictures. Well worth the read! We had a great time! Here is a picture from our trip where braciopods, crinoid sections and bryazones showed up in numbers but my best finds were a trilobite (pictured below, sort of) and a nice cephlapod imprint with part of the shell attached (no photo yet). Dad also found a clam, need some prep before a photo can do it justice. Also found something that could be a cephlapod but not sure. I'll post that to the ID forum. Thanks for checking this out!
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The day after Christmas was unseasonably warm for Vermont at 44 degrees and the foot of snow we got in November had melted. That meant that it was perfect weather for collecting. My wife and I jumped into my always packed car and headed up to the northern Champlain Islands. After several hours of collecting we came away with several nice Triarthrus becki. On the way home we stopped at a location in North Hero that I have been eyeing for the past few years but always drove by because the water was too high and it didn't look very promising. What a mistake. Within 10 minutes my wife had three trilobites on one plate and I had found an inflated graptolite. We left the site with four complete trilobites and several partials. I just started prepping with a Comco unit so I am hoping to have several of them prepped in the next month and posted on the forum.
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