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Showing results for tags 'ordovician'.
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Just got back from a trip to New York. Started off at Penn Dixie in the mid-Devonian, then to the Hamilton group, and ended in the mid-Ordovician Trenton group in the Mohawk valley. My main goals were to find some nice complete trilobite specimens, especially the Dipleura dekayi. Special thanks to @Darktooth for hunting advice at DSR. Here are some of my finds: Eldergeops rana, from Penn Dixie. cephalon is a little dinged up but I kind of like the imperfection. Partial Dipleura cephalon found loose in talus at DSR Here's another one found by splitting the shales. It had been raining hard for about two days and stopped when I arrived early morning. After prep: Greenops boothi in situ After prep: Another Greenops, positive negative from CHR. Had to glue it back together, broke when split, but it still looks good to me. Grammysia bisculata, a nice bivalve A surprise enrolled juvenile Dipleura dekayi, mostly complete , just missing an eye And last , but not least, some Ordovician fossils found in the Mohawk valley region. Hindia parva (I think?) sponge Straight shelled nautiloid, measures about 5 inches across Triarthrus parts Thanks for looking!
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Hello again! This post will be about some beautifully preserved Triarthrus fossils (and my first complete Trilobite finds). Some of them even have the eyes preserved! I found these at a local train station, and the site of significant construction lately. I believe most of the to be E. eotoni, and the last one to be E. rougensis or spinosus. It may not be visible in the picture, but the last one has a streak of pyrite along the side of its cephalon / upper thorax. Could this be some kind of soft body tissue preservation, similar to those of the Beecher's Trilobite bed?
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Hello Everyone Today my dad and I visited Bullengarook slate quarry to hunt for some graptolites. The site is aged middle Ordovician and was originally used for slate and gold mining in the 1800s I believe. There was many mine shafts still present and accessible at the site but I decided not to explore them. (Too creepy!). We arrived at the site at 1:00pm and spent the next three hours digging into the spoil heaps and splitting rocks. We came out with many beautiful examples of graptolites. Unlike Bendigo which has red graptolites, the graptolites at Bullengarook were the typical white carbon colour. Hope everyone enjoyed, Daniel
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Hi! My name is Alexandra. I live in St. Petersburg, looking for and preparing trilobites. As you know, we have near St. Petersburg very good places to search for fossils known all over the world. If someone from trilobite lovers wants to come and find good specimens here or if you are traveling through Russia and you will be interested to come in search of trilobites, then I can easily show you the best places to search near St. Petersburg without problems. You do not need anything for this-it will be absolutely free for you. I can explain it by the fact that I am the same person as you, and I have the same disease that can be called "paleontology" Is this interesting for you, write to this topic or search for me in Skype: Alexandra Kalinina (with bird on skateboard on avatar :-) ) and ask any questions. P.S. sorry for my English
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Yesterday, I was lucky enough to attend a very special field trip with the Eastern Ontario Natural History Society to a massive road cut in Ontario. The rock exposed was Ordovician aged limestone, and it produced some amazing fossils. I might need some id help with some of these. The giant cephalopod was by far the best thing I found! 1. Giant Cephalopod (with hand for scale) Camerocerad or Endoceras? 2. Crinoid stems, bryozoans and Gastropod 3. Partial trilobite pygidia
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- canada
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I was in the St. Leon and Lawrenceburg areas of Southern Indiana over the weekend doing some collecting and I came across this little concave thing - I am at a loss on what it is, any help would be appreciated.
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I found this last month on a visit to an abandoned limestone quarry near Naponee, Ontario. Though I am not very familiar with the Trilobites of this area, I believe it's an Isotelus. If I'm wrong with this identification, please tell me. It looks like there could be more of it underneath the sediment, and there is some matrix covering the pleura. This limestone is flaky and darker than any I have seen before. How would I go about prepping this? Though I've heard many people use sand, should I use something less abrasive, like baking soda? Thanks for the help.
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Rhynchonellids are hard to identify by exterior morphology as they often need to have their internal structures visible to be sure of an id. However if you know the faunal lists from a specific area, you can reduce the candidates considerably. The specimen here has 22 costae with 4 on the fold and thus, at this size must be one of two species, Rostricellula minnesotensis or Rhynchotrema wisconsinensis. The only completely safe way to differentiate between the two is the presence or absence of a cardinal process in the brachial valve but this is not possible here. However, Rostricellula usually, though not always, devoid of shell ornamentation, such as ridges or the presence of growth lines, and Rhynchotrema wisconsinensis usually, though not always, shows these, though they can also be seemingly absent through wear. But, R. wisconsinensis never shows a length to width ratio of 1.00, only from 0.80 to 0.95 and this specimen has a ratio of 1.00 which does occur in Rostricellula. Furthermore, the fold of Rostricellula is wider and less sharply developed Finally, good specimens of Rostricellula are far more common than R wisconsinense at the locality as the species most commonly found here is Rhynchotrema ainsiei which is describe elsewhere and not to be confused with the other two due to it's larger number of costae Thus, I am fairly confident with my id
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Just seeking to verify whether or not this is a Leviceraurus mammiloides or just plain Ceraurus sp. Found yesterday in the Lindsay Fm (Ordovician) in Ontario. If the former, it is sadly missing the long pygidial spines. Prepping this one is a bit of a challenge as it is fragile in places, and the matrix is very stubborn (I may have to get someone else to fix this one). I've done what I could with abrasion. Specimen is very small: 1.5 cm. For comparison, the specimen and the line illustration from Hessin's book. The genal spines don't look quite long enough to be a Levi, but the spine appears broken off before the termination point.
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The Delaware Bay and Delaware River shores are littered with lovely marine erratics. They aren't local. They aren't young. You have to dig pretty darn deep in Delaware just to get to the Cretaceous in some places. These are Paleozoic. Many pieces are limestone and probably from the Mahantango FM. But, I find just as many that are definitely not limestone. They are silicified to cert and other shades of SiO2 plus a bit of dark blue/black mineral. I'm thjingking they are ordovician, based on the Foerstiphyllum sp. corals here. The puzzle is, where do they and the other silicified corals, sponges, bryozoa etc, come from? The DE geological Survey doesn't even mention the erratics. I was told that it's been washed down from the Appalachians. Okay, there are definitely ordovician layers there that could have eroded into the river, but all I can find are formations of limestone and fine-to-very-fine grained sandstone. Been doing all kinds of searching through descriptions of geological formations in the area and I'm coming up blank. Anyone have any ideas?
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Admin please move to appropriate topic if needed. :-) Fillmore County, Minnesota, USA - the most fossiliferous county in Minnesota Ordovician Mostly Galena Formation Whispering Winds, Spring Valley, MN I thought I would share some pics of my fossil barn that I have been remodeling on a budget. There are some ideas here that others may be able to make use of. :-) Overview of the outside of the barn. Note the trilobite cutout an pterodactyl toy at the peak. Galena Formation large cephalopod. The hitching rail is nice to use as a comparison to the approximate size this orthocone ceph may have been. The kids love this dinosaur island in the old wooden watering tank. I give fossil tours and host fossil birthday parties. :-) The fossil prep table is open to guests. I have a grinder and brush, a couple of engravers ($7 from Harbor Freight), a dremel tool, and $5 3 magnification visors. Lori turned me onto a mini microscope for less than $5 off Amazon. I also make wire wrapped fossil jewelry here. This wall was created using pallet boards that were stained or washed with paint. Everything is pieced together like a puzzle. I had a couple of gals here wwoofing (wwoofusa.org), trading time for experience and room and board, and they loved doing this creative work. They also put up the reclaimed tin ceiling and I put different reclaimed tin down as wainscote. Note between the 2nd and 3rd window the dried mushrooms being used as shelves and decorations. I'm wanting to add shelves in the windows at the pane lines for more fossil display and greyed wood shelves supported by rusted chain, eventually. I had some 1880s cedar shingles and put them up on two of the walls around some pallet shelving. The pallets are super sturdy shelving for fossils and FREE! Some more pallet shelving and I used some cut off ends for a few papers. I keep my gear in the barn also. Sometimes I use it as a woodworking shop. I like to work in live edge cedar. Kids and adults all enjoy this old aquarium with a black light in the hood as a fluorescent fossil display. I have rock and minerals in it as well. The walk-in door to the hen house is in the fossil barn, I also raise white homing pigeons and ducks. So this pterodactyl is a lead in to the descendants of the dinosaurs. :-) Now to the gardens...
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I've posted this on FB, but a certain expert is rarely on there. This was the crinoid I found a few weeks ago that had everyone stumped at the time. Now, after my preliminary prep and then an hour or so of Malcolm's magic, none of us are any the wiser as to what it is. It's from Ontario's Ordovician Bobcaygeon formation and doesn't match anything in the local reference book. It seems as though the plates at the bottom are fairly distinctive so does anyone have any clue as to a possible identification????
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Hello. I'm attaching two photos: #1) an image of a "Rare Primitive Echinoderm (Edrioasteroid) from the Upper Ordovician of Ontario, Canada," from the following fossil website: https://www.fossils-uk.com/product/new-rare-primitive-echinoderm-edrioasteroid-from-the-upper-ordovician-of-ontario-canada-sku0918-isorophuella-incondita/ #2) a fossil that I found that looks similar and is about the same size as the Edrioasteroid from #1. Is it possible that my specimen (#2) is this Edrioasteroid? Thanks for any assistance! Camille
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SE Minnesota, USA Ordovician Galena Formation I'm sorry I do not have a better pic but it went home with the guy who found it. I just hosted a Father's Day hunt and this was found. I would say graptolites but NO SAWTOOTH EDGES! It did not, in the field, to me appear to be crinoid. I have honestly not seen anything like it before. Maybe it is just how it fossilized, but this was a wow to me! He was pretty thrilled! I would be too! :-D Thoughts anyone?
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Hello. The attached photo shows two rocks found in Toronto, Southern Ontario, Canada, at Mimico Creek. I juxtaposed the two because it seemed to my amateur eyes that the one on the left might have some similarity in structure to the two "mallet-shaped" structures in the rock to the right. Any help in ID'ing these would be greatly appreciated. Camille
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Any recognize this? I have come across a few of these recently in the Lebanon limestone in middle TN, mid/late ordovician. Most have been much smaller. This one still has a thin layer of matrix over much of the surface (with a fragment of a graptolite), but it's the only one I have a photo of. Thanks
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Found this the other day. both look inverted. Is this worth having a professional prep? Thank you.
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From the album: Invertebrates
Pleurocystites squamosus Billings, 1874 Ordovician Bobcaygeon Formation Brechin Carden Ontario Canada- 2 comments
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My family and I went on a cruise in December and my 10 year old dragged me to the watercolor painting lessons during the "at-sea" days. I got hooked on painting, she didn't...Anyway, these are my first attempts at combining two of my hobbies.
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While scanning some of the fossil plates I found hunting with @Bev and @minnbuckeye, I noticed this little star-shaped discoloration on one of the brachiopods. Anyone have any idea what could have produced this mark?
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Hello. I found this in Mimico Creek in Toronto, Ontario. Could someone please tell me what it might be? I thought maybe some kind of cephalopod, but really have no idea. Thanks! Camille
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Hi All! Some of you know me already, and I've been occasionally browsing the forum for years. I saw a couple of recent-ish threads that I wanted to comment on, so thought I should sign up at last... For those who don't know me, I'm a semi-independent researcher with honorary positions in Nanjing and Cardiff, while living for most of the year in the middle of nowhere (the wonderful little town of Llandrindod, central Wales). My main interests are the early evolution of sponges, worms, and early Palaeozoic ecology, but I basically like really old dead stuff, and the weirder the better. I've worked on a wide range of Lagerstatten, including the Hetang, Burgess Shale, Sirius Passet, Afon Gam, Fezouata, Llanfallteg, Llandegley Rocks, Llanfawr, and Anji biotas, so I tend to get around a bit when time and energy permit. I'm an old-fashioned palaeontologist, though, and am adamantly against the view that we now know the fossil record well enough to start concentrating on number-crunching. Everything I see on fieldwork suggests that, at least in the Ordovician, we don't yet understand even the basic diversity. That might possibly be correlated to studying a group that preserves largely as enigmatic blobs that everyone else ignores, but hey - it's a niche! The moral is, though, that amateur palaeontologists are increasingly vital in keeping the new finds pouring in. There's a vast amount out there left to discover. I'm not necessarily going to be able to keep up with everything on here, so please feel free to nudge me towards particular threads if you'd like my input! Looking forward to getting stuck in! Joe Botting
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Graptolite collected from Spring Gully, Bendigo, Victoria. Believe it is P. typhus but not sure. P. anna maybe?
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Graptolite collected from Spring Gully, Bendigo, Victoria.
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Managed to get out to a site I haven’t been to before, and found lots of cephalopods and gastropods. I recently got back into geocaching (my husband and I used to geocache as students about 10 years ago, back when you had to use a handheld gps unit. Now you can just use a smartphone.) Anyways, we didn’t collect at this location, since the geocache makes it an excellent learning resource for people who don’t know much about fossils. A few photos attached.
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