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Showing results for tags 'ordovician'.
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From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota
Lepidocyclus - Decorah Formation only? For me I hadn't found it in Platteville formation for unknown reason - could be locations. Very abundant and highly variable in forms - I suspects quite a few genus and species can be easily mistaken for this one. Part of it is I only find the smallest ones as strongly triangular and more flat with sulcus not as prominent. But all the bigger one are much more inflated. Plus costae is pretty uniform over all species. Transverse growths are sometimes prominent on anterior portion of the shell, usually on adult specimens. -
I "rediscovered" a weird rock I found 6 years ago at a quarry near Belvidere, Illinois. The rocks exposed at the quarry are dolomitic ordovician Galena group. Last night, I took a closer look at it under a microscope and noticed that the spiny crystal structures seem to be formed by mycelium. I know mycelium breaks down rocks, but I'm curious to hear any thoughts/insight about this oddity.
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From the album: Swatara Gap
Enrolled specimen. Collector unknown.-
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From the album: Swatara Gap
Collector unknown. -
From the album: Swatara Gap
Collected by Ed Books -
From the album: Swatara Gap
Collected by Steve Hess -
From the album: Swatara Gap
Collected by Steve Hess-
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From the album: Swatara Gap
Collected by Steve Hess -
As I went through the rocks I had collected in October from the Ordovician's Galena, likely Stewartville Formation, a SMALL gastropod popped out of a piece of matrix that was split open. After looking thorough my references, I could not place this fossil. Hence the need of your help.
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I have found a few of these mis identified fossils from the Galena/ Ordovician. A request for identification was made awhile back and I labeled them Asgadaspira evolvens based on a response given to me. Having just exposed another one, I searched for it on line and nothing came up. Did I misspell it or am I just out in left field? By the way the first one measures 8cm by 5cm.
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Found what I think looks like a trilobite cephalon in a creekbed, but I'm not certain. It was fragmented, and the shell looks to be eroded away. This creek had a slurry of Mississippian aged Burlington Formation and assumed Ordovician aged Trenton Limestone mixed throughout. I found Mississippian crinoids and Ordovician cephalopods at this location. It looks like it resembles Illaenus taurus, or some other member of the Illaenidae. Any opinions?
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From the album: Fossil Collection: DC Area and Beyond
Crinoidea Maysville Roadcut, KY Kope, Fairview, and Bellevue Formations Ordovician -
From the album: Fossil Collection: DC Area and Beyond
Gastropoda Maysville Roadcut, KY Kope, Fairview, and Bellevue Formations Ordovician -
From the album: Fossil Collection: DC Area and Beyond
Brachiopoda Maysville Roadcut, KY Kope, Fairview, and Bellevue Formations Ordovician -
From the album: Fossil Collection: DC Area and Beyond
Graptolithina Mint Springs, VA Lincolnshire and Edinburg Formations Ordovician -
From the album: Fossil Collection: DC Area and Beyond
Cephalopoda, Isotelus sp. Maysville Roadcut, KY Kope, Fairview, and Bellevue Formations Ordovician -
From the album: Credit River Fossils from Streetsville, Ontario (Georgian Bay Formation, Upper Member)
Favistina calicina coral from the Credit River near Streetsville, Mississauga. Georgian Bay Formation, Streetsville Member, late Ordovician. Found as a loose specimen by the banks of the Credit River. This colonial rugose coral is very abundant along the site with many small loose colonies. Some colonies can be found on a limestone matrix. Please click on image sizes to see details of the corallites. -
From the album: Credit River Fossils from Streetsville, Ontario (Georgian Bay Formation, Upper Member)
Favistina calicina Found as a loose specimen at an exposure at the Credit River on Streetsville, Mississauga, Ontario. Late Ordovician, Georgian Bay formation. A rugose colonial coral. Coral approximately 10 cm excluding extra matrix. -
On a trip to southern Indiana yesterday I met a member of the fourm, Newbie_1971, and he helped me find my first trilobite! I found several well preserved gastropods as well as some pieces of isotelus trilobites.
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Greetings from Oberwil, Switzerland. I'm a new member on thefossilforum.com, but I've been collecting fossils from roadside stops and occasional dedicated outings for nearly 30 years. I'm a chemist by training - I fell in love with making new medicines, and have stuck with it. I find it mind-boggling to relate to the age of the fossils I'm holding...life is far more ancient, far more mysterious, far more marvellous than our imagination can comprehend. I've learned to respect life deeply...this planet is the only one where we know it exists, and has existed, for unimaginably long time. I'm in awe. I'll share some pictures from my collection in the coming days, in hopes of finding out more about where they fit into the grand scheme of life. My favorite fossils are Ordovician (Paleozoic), but I've come across some real stumpers from my trip to Madagascar a few years back; those fossils are almost certainly from the late Mesozoic. I'll be asking for advice on them soon. Ah...I'm now a Swiss citizen, but I was born to German (Swabian) parents who had emigrated to southeastern Tennessee in the early 1960's. Switzerland is home to me now. Best regards Mike
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My annual excursion to visit my family which migrated to Kentucky years ago took place at the end of October into November, lasting two weeks. Of course, the planned trip took me in the vicinity of some excellent fossil bearing sediments and though quality time with family was the primary purpose, I did hope to add to my collection. All of the spots I visited were ones I've been to before; however, the first stop was a new one for me- Paulding, well known and documented on the Forum for its Middle Devonian marine fauna. I drove from the suburbs of New York City for almost eleven hours, raining most of the way, arriving at and spending the night at a hotel in Defiance, Ohio. Paulding was about fifteen minutes away. Drove there the following morning, It was a brisk forty degrees, mostly cloudy, but sunny at times. A TFF member I was supposed to hook up with there unfortunately had to bail last minute. A nearby quarry which exposes the famed Devonian Silica Shale had, years ago, stopped allowing collectors to hunt there. There was a big outcry and the quarry set up a fossil park dumping fossiliferous rock onto a property they owned which the public were free to collect from. Much of it is now overgrown and much of the rock has been reduced to gravel. However, there are still many fossiliferous chunks out there if one is willing to look.
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Hi everyone! I was in SE Minnesota recently, looking through limestone outcrops where I have found cephalopods on a previous trip to Mystery Caves, MN. While looking for more cephalopods during my most recent trip to Fillmore County (and finding a few) I found this piece shown below. The fossil is likely Ordovician aged, as is common in SE Minnesota. The formation I am less sure about, but if I had to make a good scientific guess, it is the Galena formation. My question is if this is a cephalopod fossil that is just heavily eroded, of is this just a cool rock? I decided to also flip the fossil with my hand to better see the ends. Thanks for the help everyone.
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Hi everyone! Longtime human recently turned into amateur fossil hunter. I currently am in the Twin Cities in Minnesota, and have been for the past 5 years. I've been enjoying lots of the beautiful nature the state has had to offer in my downtime, even during the winters which are not as bad anymore. I will say that I have always loved paleontology! That, marine biology and astronomy are what propelled my love for science, and what have pushed me to pursue a PhD in Chemistry. I never knew fossil hunting was an activity anyone can do, or even possible to do, until earlier this past summer. I had an awesome trip to the beach with family, and while everyone swam, I would walk the shoreline for hours looking for shells of different sizes, colors and species for almost a whole week. Toward the end of my trip, I went to a marine biology museum and talked to some of the curators and learned that fossil shark teeth are a usual find by beachcombers, but usually you had to have an idea of the shape or accidentally bump into it. I was so thrilled to learn that was possible, so I made it my objective to at least find one tooth by the end of the trip! And I am glad to say that I found quite a few in a couple of hours of trying! I even found a few other fossils (a small piece of soft shell turtle carapace, a crab claw, not shown) Since then, I've been trying to do some research when I can (again, graduate student so I have other research duties!) and try to explore the natural history of Minnesota. I've found the broken up pieces of braciopods shells everywhere on the Platteville limestone on the Mississippi River, as well as bryozoans, a few gastropods and cephalopods, and, as my username implies, a whole slew of crinoid segment and columnals! Crinoids just speak to me, and I find those circular wonders everywhere! Most recently, I recently went to a trip to SE Minnesota and met up with a well known Forum member and went hunting for giant gastropods. It was a super success! Even if there was certain fossils we couldn't remove. That's a little about me, and I'm looking forward to learning more from everyone around here! I'm hoping to get help with FossilID for some things that I have found, and maybe connecting with others that know the area or neighboring states like Iowa! I would love to get a general idea of where to hunt, and go on more adventures and make some friends! If you'd like to see some of my finds, I'm more than happy to post some of those here as well
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I have a nice little slab of Platteville Formation (Mifflin Member) from the Ordovician of SW Wisconsin that I received from @connorp late last year. I am working on a post that describes all of the great things in it, but want to get a couple of ID's cleared up so I can be more concise in that post. Here are three trilobite pieces found on the slab that I have taken a stab at an ID, but would love confirmation/correction. Hopefully there is enough there for some of our trilobite experts such as @piranha , @Kane or any others to offer some advice. Thanks for any insights anyone can offer. Each picture is numbered in the upper left. Mike Here is a picture of the small slab with the location of the trilobites in question numbered. The sharp eyed will see another trilobite cephalon in the lower portion of the slab. I am fairly certain that one is Gabriceraurus mifflinensis. Here is the first question. This looks like the best match I can find for species listed from that formation, but I'm not certain. I wish I could get this one a bit cleaner, but the matrix left is pretty hard and stuck to the pygidium. This one may be a stretch as there is not much there, but maybe enough to be recognizable (or maybe not). Thanks for any help.
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Over a week ago I took advantage of our university's Reading Week break to hop a train east to do some late season digging. Apart from a few surprise finds, it did not quite live up to my expectations. I had to hastily organize it as I had got the dates wrong, assuming Reading Week was the following week (one of my students corrected me). It meant getting the trains and motel all lined up with barely a day to spare. Upon my arrival in Toronto for a layover, someone not all together upstairs thought it would be a wise idea to pick a fight with me. I defused the situation, but it certainly help set the tone for this week-long adventure. On the first day of the dig, I ended up walking about 25km for nothing. On the next day I went back to the spot that had been so productive weeks before, but this time it turned out to be the opposite with two exceptions. Unlike last time when cheirurids were popping out like they were going out of style, not even more than a pygidial spine of one this time. Instead, a pair of crappy Flexis:
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