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Showing results for tags 'Prasopora'.
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A nice Dictyonema flabelliforme dendroid graptolite from Oslo Fields in Norway. It's Tremadoc, Lower Ordovician in age and is thus maybe around 480 mya. Another angle :
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- amplexopora
- amplexopora septosa
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From the album: Platteville to Decorah formation Ordovician Twin Cities
Prasopora conoidea with unidentified bryozoan. You can also see rust stains. Rust stain can be very prevailing in some layers or spots on rocks. Mainly because glacial deposits tend to be very iron rich from Norrthern Minnesota and then they get dissolved in groundwater and redeposit on the fossil shell hash because they're much harder for water to pass through. Another thing to know: Prasopora strongly prefers muddy sediments and thus wont appear or rarely in carbonate rich environment. . -
From the album: Bryozoan of Minnesota Ordovician
Prasopora conoidea - average sizes that makes them noticeable. Sometime in the future I will have to examine closer - but I suspects smaller colonies may exists on harder surfaces than most people thought. From my examinations Prasopora conoidea strongly prefers muddy sediments, as I hadn't found any in carbonate rich rocks. Seem to strongly prefers brachiopods of any sizes as starting point for their colonies though uncommonly occurs on bryozoans as well. Abundant in all layers of Decorah formation.-
- bryozoan
- decorah formation
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From the album: Bryozoan of Minnesota Ordovician
Prasopora conoidea from Decorah Formation. Those are the largest ones I have found - seemly? (not 100% sure) only in upper Decorah Formation. The middle one is the largest I had found so far.-
- bryozoan
- decorah formation
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My story will be a bit(could be too much) long, so I put this report separately from @Kane's report. I'm not sure I can do this or not 'cause this is my first time to write same topic from others'. If I should not do this, I apologize administrator for making bothersome Before I start my story, I convey my profound and huge gratitude to @crinus for taking me quarries(these travels were my very first visiting to not only quarries, but also Ontario's fossil site!) and giving a lot of nice fossils to me what he found, and to @Northern Sharks for giving a nice specimen to me what he found as well from Brechin quarry and organizing Bowmanville journey(I didn't know that until seeing from @Kane's report. I'm not sure that you set the all plans), and to @Malcolmt for giving a complete crinoid to me, which is my first complete crinoid possessing arms and stems, and finally to everyone that I've met on this travel for welcoming me *Plus - My report will be incomplete 'cause I don't know that much about Ontario's geological information and some species' scientific names. So, I'll appreciate greatly if you guys tell me about right information and help me to correct it I revised this post a loooot of times 'cause I realized that it was not report, but a proper diary(Too Much Information.. and still, it's like a diary..) Well.. Now then, I'll begin my long story with some pictures though I couldn't make to take that many pictures of quarries and people. As for the Brechin quarry, I forgot to take my phone and there was no time to take DSLR out from my bag. And as for the Bowmanville quarry, I was so concentrating to find fossils that I forgot to take pictures *Date : Oct.21&22.2017 *Location : Brechin quarry & Bowmanville quarry *Records of formation : Brechin quarry - D -----> Upper Verulam Formation(There was a "cluster" of fauna that I think it's different from below one. Color was bright grey and somewhat yellowish) DD -----> Middle Verulam Formation(Bluish and grey rocks with vurnerable condition) DDD -----> Lower Verulam Formation(Brown and grey rocks) DDDD -----> Upper Bobcaygeon Formation(Alternates between sublithogenic and medium calcarenitic limestone, but also includes some brown lithographic limestone and bluish fine-grained limestone in minor thicknesses)[*] [Buried under the ground] Middle Bobcaygeon Formation(Grey and brown, very fine grained to sublithogenic, sparsely fossiliferous limestone, with some fine-grained limestone in the upper part)[*] [Buried under the ground] Lower Bobcaygeon Formation(Brownish grey, fine- and medium-grained limestone)[*] (Reference - [*] Bobcaygeon formation - Weblex Canada. (n.d.). Retrieved from http://weblex.nrcan.gc.ca/html/001000/GSCC00053001579.html @Northern Sharks informed me! Thank you! ) Bowmanville quarry - D -----> Blue Mountain Formation (I couldn't get there.) DD Upper Lindsay formation DDD Level 2 (?) DDDD Level 3(?) - Lower Lindsay formation (Below as well. The quarry was so biiiiiig!!) - - *Geological Age - Middle Ordovician These all rocks are what I took. Maybe I took a lot of fossils even if it is only a small part of trilobites. I just so excited that I found Ontario's trilobites directly, not through internet store or pictures! Well.. Now I'm worried the weight.. Could I take these whole fossils?... I should have considered about it, not just collect unnecessary things by my instinct. It was not a clever move.. That crinoid(at 11 O'clock-wise) is not what I found these quarries. I found it from Scarbourough bluffers park before. To begin, the beginning of the day(Oct.21) I've met @crinus first at the very early morning of the day(For me. 'cause I'm not the early bird type). Actually, we met from Ebay. I won his two auction and I asked him that would you wait for me until I get to Canada in order to reduce shipping cost. Then, he offered me to go to quarries with him! Anyway, we arrived there around at 8:30 AM and there were 4 or more people had already arrived. I've met @Malcolmt and two other people(Sorry, I can't remember the name. My poor memory..) on near the greenish and bluish pond in the quarry. After handshaking, @crinus and I went to the piles of rocks, which is near the pond. We climbed up the piles of rocks and met @Northern Sharks on there. He found one complete Calyptaulax sp. and dropped it from his hand while we were greeting each other(yet, fortunately, the trilobite was alive with small crack on the pygidium(if my memory is correct)) After the greeting, @crinus and @Northern Sharks went to another place and I remained there, which was that @Northern Sharks found a trilobite, and looked for trilobites with hammering big rocks. I found a horn coral, which is Lambeophyllum profundum Conrad, 1843, the cephalon part of Ceraurus sp. , and a loooot of brachiopods and so on It came from lower Verulam formation. This one is Lambeophyllum profundum Conrad, 1843( @Northern Sharks and @FossilDAWG informed me! Thank you! ) Ceraurus globulobatus? I don't know the exact name of this specimen.. This one maybe came from the middle Verulam formation because of its color. Though I found this from the lower Verulam formation area.
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- achatella
- bowmanville quarry
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From the album: Other Fossils
This is a large and robust Prasopora sp. from the Decorah Shale Formation of Minnesota.-
- Bryozoa
- Decorah Shale
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The top, the bottom and I am 99% sure of it. BUT before I label it, I thought I should make 100% sure of it. I think it is a stunning example, you can even see the pores! Bev