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Showing results for tags 'ordovician'.
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Hello, I'm from Minnesota, been fossil collecting a few years now. Still relatively new and learning. I've always been interested in prehistoric life. Over the last few years I've gotten hooked on fossil collecting, ever since I had the opportunity to collect in Montana. Found some good stuff my first time out. (Will post in collections forum) Since then I've been collecting in local areas in Minnesota. Have had some opportunities to collect in Iowa as well. Have a fair collection of Ordovician and some Devonian from there. I look forward to getting to know and learning from fellow fossil hunters on this forum
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Hello everyone, I'm New to the fossil forum. I'm from Minnesota and I've got some nice sized Ordovician fossil from the Platteville formation in Rochester, Minnesota. They're in Limestone sediment. One is a slab that is a filled on both side with crinoid stems (hoping for other rarer parts under the sediment on this slab). The other two are large section on cephalopods. I'm looking for some advice/tips on how I should go about prepping them. Like what kind of tools should I be using and if I should use any chemicals. Any advice/tips would be appreciated. Still fairly new to fossil preparation. Also if better pics are needed I can get them Thank you
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Back in May 2017, I brought back some nice fossil plates from Ohio, I believe Ordovician in age. First photo is plate 1. Next photo (of plate 1) shows a close-up of parts of the trilobite Isotelus, next photo - a nautiloid (unknown species), next photo shows valves of the brachiopod Strophomera, along with many bryozoan fossils. Next photo is a close-up of crinoids on plate 3. (Not much on plate 2). And last photo is of quite a few crinoids on plate 4.
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Please bear with me as I am new to fossil identification. My 14 year old son recently became interested in fossils and geodes, so I am trying to encourage his interest. We found a round rock about the size of a bowling ball recently while digging to install a septic tank and he wanted to break it open to see if any crystals were inside. When he broke it open, he found some fossils, one of which I believe is called a mold fossil, images attached. The object that made the imprint appears to have had spines or thorns. Any help is appreciated! This was found in west central Missouri, SE Henry County. The imprint measures approximately 4-5 cm long. The round circle near the imprint appears to be a similar mold fossil, seen end-on. When he broke open the rock, he apparently split the mold down the middle. The pictures show both halves.
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Death near the shoreline, not life on land December 13, 2018, Geological Society of America https://phys.org/news/2018-12-death-shoreline-life.html https://www.eurekalert.org/pub_releases/2018-12/gsoa-dnt121318.php Shillito, Anthony P. and Davies, Neil S. (2018) Death near the Shoreline, not Life on Land: Ordovician Arthropod Trackways in the Borrowdale Volcanic Group, UK. Geology. ISSN 0091-7613, 1943-2682 https://pubs.geoscienceworld.org/gsa/geology/article/47/1/55/567352/Death-near-the-shoreline-not-life-on-land GSA Data Repository 2019022 https://www.geosociety.org/datarepository/2019/2019022.pdf Yours, Paul H.
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- arthropod trackways
- borrowdale volcanic group
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I’ve been fossil hunting ever since my teacher brought everyone to the Mississippi River in Saint Paul MN. I’ve only been hunting in state and have got a collection of a bunch of tiny trilobites bryozoans, a few small cephalopods and more sea bottom than anyone should have in their room. I’m going to be doing a highway 52 drive in may to hit some of the road cuts and hopefully get some bigger stuff. Next fall I will be attending college in Duluth Minnesota majoring in Geological sciences and either double in engineering or minor. Not sure, we’ll figure it out, it’s fine. I’m excited to be here and share my excitement about the Earth and fossils with everyone! Hope you all have a good one.
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Finally was able to get out on the river for my first hunt of the year, the water receded time to see what the winter flood brought. I found some big layered slabs of Ordovician bits and pieces and am looking forward to cleaning them up to see what I got. Also found a beautiful mussel half, full of pink mother of pearl. I left it as I found it as Indiana law requires. Was great to get out!
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- cincinnatian
- hashplate
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Hoping Someone will recognize this one . found in creek gravel from Ordovician.
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Where are the best places to fossil hunt in New York?
emmag15 posted a topic in Fossil Hunting Trips
As the snow will start to clear soon, I’ve been looking into new places to hunt for fossils in New York! If you have any suggestions I would love to hear them and visit them! Thank you in advance! -
It’s been quite some time since my last post here on the forum – more than two years! I missed the forum and it’s good to be back. This last week was spring break for some colleges in Pennsylvania, mine included. Thursday we saw beautiful sunny weather, warm enough to shed the heavy winter coats we’ve been wearing for months. Checking weather forecasts, I was pleased to find that Friday would be similarly warm – sunny and mid sixties to seventies! Perfect fossiling weather! I seized the opportunity. I knew these unseasonably warm temps could be gone as soon as they had arrived and didn’t want to miss a chance like this. I drove out with my little brother to a couple of sites I’d visited before. The first was an Ordovician roadcut. I’d been told the rock here was from the Salona formation, but Coburn formation limestone is also known from the area and apparently has similar fossils so I’m not entirely certain on this site’s stratigraphy. After about an hour’s drive we arrived at the site – only to be greeted by two nasty pieces of roadkill at the base of the cut! Agh! Thankfully they weren’t near the collecting area and didn’t have a noticeable odor yet. We immediately set to work, crawling carefully up the gentle slope of the cut and checking each irregular chunk of tan limestone. It didn’t take me long to score several fine Cryptolithus trilobites, as well as some neat mushroom-shaped bryozoan colonies and a handful of brachiopods. The trilobites here are usually found with either the horseshoe shaped ventral side or the noselike glabella poking out of the surface of the stone. They will take some prep work to expose fully – I’m hopeful at least one or two of them are complete under all that stone. Most of them are just isolated cephalons or chunks of Cryptolithus collar. After about 45 minutes on the cut we took a break for lunch, stashing our finds in the trunk. Our sandwiches finished, we walked back out for round two! Scrambling over fallen stone, I managed to score two big blocks with multiple trilobites each. The crown jewel was a block with at least 15 Cryptolithus showing! I probably won’t even attempt prepping that one until I’m a little more confident in my abilities. I’d hate to ruin such a great multi-block of trilobites. After another hour or two at the cut, we’d found enough. Some of our finds: Bryozoans: More trilobites: Brachiopods: Continued in next post…
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Day Two ; Locality One (or Six if you include Day One) Black Sahara, South of Erfoud 20th February 2019 Well this is where things really get interesting, so stick with this thread as there are dozens of photos of fossils coming up. Looks at the tags if you want clues. I was up bright and early and wandered out at about 7 am to watch the sun rise over the still mighty Erg Chebbi dunes. And as night's candles were burnt out and jocund day stood tiptoe over the misty duney tops, the chaps came to join me and managed lots of photos. Here's one, if you would like to see more, I'm busy posting a kazillion of 'em under the Nature Photography thread.
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- asaphellus
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I am thinking about donating some of my fossils to a University or Museum but are they good enough that they would be interested.How do I find out?
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Hi all Never thought i would happen to say that, but this week end i put a final effort into cleaning trilos i picked during winter season and i have to admit it : I'm overwhelmed with trilos. Some of the visits had been the most productive i made and even if you dont come home with the quantity, there's always something to make the trip worth. Most of the best pieces had already made it to the shelves, i posted some in earlier topics. So a big part of what i finished are B grade samples. Some have their head more or less disarticulated, some the pygidium missing or damaged. So heres the group view of what i more or less finished over the past two weekends. I ll keep posting in this thread, the most noticable stuff once i got the pictures sorted, so stay tuned.
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Last Autumn, I took a side trip to Graf, Iowa in search of it's "elusive" cephalopods. Fortunately for me, a large piece of rock had released itself from the overhanging cliff and I proceeded to use my sledge hammer on it until broken into eight 50 lb pieces. This then was loaded into my truck without further exploration as I knew, each chunk contained maybe 50 cephalopods within it. These chunks of matrix were to provide me with a little winter entertainment while the landscape of Minnesota remained white. Two weeks ago I began splitting these boulders, looking for the treasures contained within. At the same time, @Ludwigia posted an image of belemnites , that made me think how similar his finds were to cephalopods of Graf. <img src='http://www.thefossilforum.com/uploads/gallery/album_1563/gallery_2384_1563_281093.jpg' alt='Acrocoelites (Acrocoelites) gracilis (Hehl in Zieten) ?' title='Acrocoelites (Acrocoelites) gracilis (Hehl in Zieten) ?' data-role='theImage'> After complimenting him on his finds, he asked to see my hash plates of Isorthoceras sociale. It is for this reason that I have put a trip report together. This location continues to perplex me a bit. How so many cephalopods over such a long period of time could keep collecting here. From my understanding, Graf, Iowa back in the Ordovician period was a very shallow marine environment where wave action altered how these cephalopod carcasses were deposited. Due to the wave action, many examples of one cephalopod being washed inside the shell of another cephalopod exist. This is very unique!! The septa of these creatures were thin and broke down readily in the surf, leaving space for other cephalopod shells to be deposited within. To show this better, here is a specimen that had all of it's septa dissolved, but the siphuncle still remained!!! Another picture showing the decayed cephalopod with remnants of a siphuncle yet no septa This I understand. But from my perspective, there are several odd factors that defy explanation from my limited knowledge with regard to the cephalopod deposition in Graf. The most prominent cephalopod rich rock is a bit orangish in color, as can be seen above. But there are 2 separate grey/brown zones that the specimens look completely different. First is an area where the cephalopods are flattened like pancakes. If you notice, the gastropods (circled) contain no distortion/ flattening. A mystery to me. The second darker zone contains cephalopods that are very small in comparison to the orange zone. They reach only about10 -20% of the "normal" size of Isorthocerus socialis found in the orange zone. A different species? Or a stress environment where they just didn't grow well? Obviously the matrix changed, so then should their environment have changed. An unknown mystery again for me.
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- elgin member
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This gastropod was found in a block of matrix from Graf, Iowa that I split open last week. I have never bumped into this type of gastropod from there before. Research has left me stumped. Suggestions are welcomed! Elgin member, Lower Maquoketa formation, Ordovician. Thanks for the help Mike
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Picked this rock up while fishing the river over the summer. Since it's to bloody cold to do anything outside I figured I would clean it up and see what all the bits and pieces are. I think it will be pretty when it's done, although some of the fossils are eroded. It's like where's Waldo? See anything?
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This one is storm battered, broken brachiopods but what I'm curious about is the other half of this hash plate. Running down the center is a ridge that is part of the tongue shaped fossil, hope you can see it okay in the photos. Thanks in advance!
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I've been trying my hand at prepping this hash plate that I found on the Whitewater River in Southeast Indiana. Gotta do something when the river is high and the weather sucks!! There is a lot of bits and pieces going on in this one and the color of the fossils are odd compared to the matrix they are in which is really soft. Thought I'd share, what caused this jumble of fossils, and what do you see?
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- brachipods
- cincinnatian
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Came across this fossil today while out enjoying the sun. I've found coral before but the little cavities are usually infilled, this is like swiss cheese, wondering what it is. It feels like a pumice stone in weight and texture. Thanks in advance!
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Synonym: Diacalymene ouzregui References: DESTOMBES, J. 1966. Quelques Calymenina (Trilobita) de l’Ordovicien moyen et supérieur de l’Anti-Atlas (Maroc). Notes et Memoires du Service des Mines et de la Carte Geologique du Maroc, 188 1966: 33-52.
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- alnif
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This weather has got me a bad case of cabin fever, my normal fossil hunting ground along the Whitewater River in Southeast Indiana is flooded. Went out in my back yard today to look thru the two truck loads of leach line gravel I bought for landscaping, the quarry is only about a 1/4 mile away. Found this odd ball, thin layers of crystal like formations on both sides, has hollow cavities and some brachiopod fossils that are a red color. Just curious as to how it formed, wish I could get closer photos of the brachiopods, will try again tomorrow with some daylight....if the sun ever shines again LOL.
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Hey guys, I am fairly certain that this is a straight-shelled nautiloid cephlapod but this one is different from others I find. I find a lot of fragments from cephlapods in Cincinnati with only a few segments. This one seems like the whole shell, though it is 7.5 centimeters in length. Also one side has a bunch of holes which I am curious about. Any more info on this specimen would be much appreciated. Found in a creek so it has probably been weathered a lot. These next pictures are the top and bottom, (i dont know why they are flipped to the left)
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While prepping a Platystrophia ponderosa just now, I came across this little guy. I'm thinking Scolecodont. Thoughts? Stratigraphic context in tags. Scale in mm.
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- corryville fm
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All, I went fossil hunting at a new site a little north of downtown Nashville and hit paydirt with these large pieces of rock; they are absolutely packed full of rugose coral
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- coral
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I decided to take the day off of work today because it was supposed to be in the mid 40's and I figured I could whack open some Mazon Creek concretions. I was very nice out, but I figured that my time would be better spent cutting down matrix on a number of pieces that I collected recently from 3 different time periods (Pennsylvanian, Mississippian and Ordovician). I did not get everything cut down, but it was a good start, here is the aftermath. Pennsylvanian- Sometimes things just pop out of the matrix like the two beauties Ordovician- Mississippian-
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- hash plates
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