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Found 963 results

  1. Thaleops? Cephalon?

    Found this one in Bowmanville (Mid Ordovician, Cobourg? Formation) last weekend. My best guess is Thaleops laurentiana cephalon but id like to have a better idea what it is before I attempt any more prep. Have not tried yet but probing with air abrasion looks like it will be difficult since the matrix is full of calcite or some other crystals. @Malcolmt @Kane @Northern Sharks
  2. Ordovician Hunt

    Last weekend I made the four hour trip to a spot I prospected back in July, exposing the upper Cobourg Fm near Nottawasaga Bay. The exposure was quite long with a maximum strata height of about 3 metres. Unfortunately, for all the travel and expense, no fabulous finds. The exposure is extremely weathered, and splitting mostly revealed tiny bits or blank muddy/chunky bedding. Still, I collected a flat of items that our local collectors would consider junk, but will make their way into the collections of other more farflung forum members at collecting meet-ups who do not get to collect up here. First up, Isotelus fragments which dominated the rock as very small bits, but occasionally larger partials appeared. The second image is of the wide pygidium with a free-standing section showing the doublure.
  3. "An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body" LINK
  4. Predation on Trilobite pygidium?

    I recently found this trilobite tail with a piece missing out of it on both positive and negative sides. Could it be a bite mark?
  5. Lots of ordinary things lately at Etobicoke Creek and Joshua Creek. Of course, when I began hunting in April 2019, I couldn't imagine finding such treasures, but there you have it. At the former location, we seem to have fun finding "How many decent-size orthocone nautiloids can fit on one rock," and the number appears to be 10 or 12 in some cases ! We also seem to be able to find snakes when we lift rocks, which can be disconcerting. Recently I noticed some unpromising "wavy surface" rocks, but they had a layer underneath with branching bryozoan fragments. Turns out, there are lots of them, and some are the largest chunks I've ever seen. So today I was out in the rain, getting muddy. I had to leave lots of great rocks...they were reasonably heavy chunks. Tree roots along the creek had split up the shales, pushed some promising rocks through to the forest floor, and dumped lots of slabs onto the creekbank. When I get some of these rocks cleaned up, I hope to post some pictures. Meanwhile, here is a group of recent finds.
  6. I found this in ordovician strata that is approximately 450 million years old. It looks like a shell fragment from a bivalve or brachiopod, but it has rounded edges. Any help would be appreciated.
  7. Unknown Ordovician fossil?

    I found this back in July from the Ordovician Platteville Formation in Oregon, IL. This is the only picture I have of it, and unfortunately, since it’s at home and I’m at school, this is the only picture of it that I have. It’s less than 2cm from side to side. I just don’t know with this one, my best guess is part of trilobite maybe? Any help would be appreciated. Thanks!
  8. My wife and I went for an afternoon drive Saturday to see if we could find a few places I had been reading about a couple hours away. The first stop was Mcintyre Mountain, a Pennsylvanian plant fossil location looking through the tailings from a large but long abandoned mine town, like 150 years abandoned. The drive in was a 4 mile dirt road up the mountain. Luckily for us the majority of it was well maintained and the scenery was beautiful.
  9. Hi all, I have been more or less away from the forum for the last few monthes. Life has been hectic. And if i still managed to go on the field quite a lot, i did have any time left for the rest (writing, taking photos, processing stuff, labelling etc). Nevertheless, i finally manage a quick photo session. As an appetizer, what is prolly the best piece for quite some time. A double trilo, Eodalmanitina sp, one preserved with his caudal spine. So 2 rocks as a starter . I had to sacrifice part of the 2 counterprints, to unveil the opposite trilo... Regards.
  10. Trilobite tail, or not?

    I found this Cryptolithus in the Late Ordovician, Viola Springs Formation of Carter County Oklahoma. Can someone tell me if it is C.fittsi which I see on a fauna list for the site or another species? I'm also wondering if the segmented strand below it is part of the tail or something else?
  11. I decided to leave at 5 am on Friday to head down to a roadcut that I read about that was located in Maysville, Kentucky. I knew that it was at the right off of AA Highway so I decided to grab a hotel in Wilder, Kentucky which seems to be the start of the roadcuts that are on AA Highway. After 5 hours of driving I was in Wilder and started down AA Highway knowing that I might stop at a couple roadcuts prior to hitting the big one in Maysville. Believe it or not, if you count all of the roadcuts that are on the 41 mile drive from Wilder to the turn off for Maysville you will pass, if my counting is correct 120 places to collect. Now I counted each side as a separate roadcut since sometimes I find different things on each side. This will be a picture heavy post since I stopped at Maysville twice, plus 8 other roadcuts on AA Highway and on the way home Sunday I spent about 5 hours at St. Leon, Indiana. I will be identifying the locations using the name that is associated with the pictures that I took with my I-Phone, not sure if the cities / towns are correct, but besides Maysville and St. Leon, all of the stops were on AA Highway. Stop 1 was at a roadcut in Melbourne, Kentucky. Like most of the places that collected at in Kentucky it has a heavy concentration of bryozoan, there were also trace fossils and Trilo-bits. Here are a couple pics of what can be found here. Trace Fossils- Hash plate with Flexicalymeme Trilo-bits- Bryozoans- Stop 2 was at another roadcut in Melbourne. This site I found the bivale Ambonychia. Bryozans- Hash plates with Hebertella brachiopods and Isotelus trilo-bits. Orthoconic nautiloids- Other Trilo-bits of Flexicalymene. Stop 2 Trace fossils to follow-
  12. Endoceras Sp.

    From the album Finds From the Ordovician -488 to 443 MYA-

    Section of Endoceras, from the Collingwood member of the Lindsay (Cobourg) Fm.
  13. Tabulate Coral

    From the album Finds From the Ordovician -488 to 443 MYA-

    Tabulate coral, from Manitoulin Island.
  14. Bivalve (Ambonychia)

    From the album Finds From the Ordovician -488 to 443 MYA-

    From the Georgian Bay Formation.
  15. Brachiopod (Rafinesquina)

    From the album Finds From the Ordovician -488 to 443 MYA-

    From the Georgian Bay Formation.
  16. From the album Finds From the Ordovician -488 to 443 MYA-

    From the Collingwood member of the Lindsay (Cobourg) Fm.
  17. Prasopora bryozoan

    From the album Finds From the Ordovician -488 to 443 MYA-

    From the Collingwood member of the Lindsay (Cobourg) Fm.
  18. Psueogygites Latimarginatus

    From the album Finds From the Ordovician -488 to 443 MYA-

    Partial trilobite from the Collingwood member of the Lindsay (Cobourg) Fm.
  19. Another trip to Etobicoke Creek, this time near Sherway Drive. There were lots of nice things, but quite the same as usual, so I concentrated on looking through the gravel for smaller pieces and ended up with a box of knick-knacks to explore. As usual, my wife found all the interesting items. At one point I picked up a rock and got surprised by a little snake. He was really steamed. We had a delightfully relaxing outing.
  20. A trip to Etobicoke Creek

    Yesterday I visited Etobicoke creek (west end of Toronto) which exposes the ordovician Georgian Bay formation. The creek was abundant with trace fossils and plates of preserved ripples, as well as small orthocone nautiloids.
  21. Hello everyone! I found myself in Vermont today, and through much cajoling I convinced my parents to allow a detour to a fossil site a forum member let me know about a year ago. It is from the Crown Point Formation, Ordovician in age. The first time time I was there, about a year ago, I collected a ton of trilobite cross sections. While those are cool, this time I wanted to focus on finding ones worn in a slightly more favorable fashion, and perhaps one worthy of prep. Unfortunately, I didn’t find any worthy of prep, but I did find some decent trilo-bits. Also came home with a Gastropod and a funny piece of pareidolia (450 million year old Mr. Bill?). I didn’t have much space in the car reserved for fossils, so I was sparing in what I picked up. ‘Twas a fun hour or so indeed.
  22. I was determined to trace a shale layer into a hillside, and managed it: what a joy to discover more shell imprints. The genus I'm looking for is Rafinesquina, or something similar. Also got some colonies of things and trace fossils out of the muddy creek area. This place is the tip of the Georgian Bay formation that pokes into Oakville. It yields its treasures sparingly and you really have to work for it! The rocks were so heavy...I had a bag of goodies plus 3 heavy slabs...barely made it back to the car. I left 4 spectacular slabs that were too heavy to manage...might go back for them when I feel ambitious.
  23. Would anyone be interested in trading for high quality unpolished Ordovician STROMATOLITES of various sizes from a few ounces to up to ten pounds in weight? Fossils have been collected in Wisconsin USA (from the Oneota Formation). I have a large number of every size from a few ounces to ten pounds. Most all contain classic stromatolite features including concave (dome-like) tops, concave bottoms and multiple apical laminae (visible from side-view). I am attaching representative photos of a few specimens. Many more are available based on what you may desire. Additional photos can be sent. Let me know if you' are interested. I would be willing to consider almost any kind of fossil in trade to expand my collection. Crinoids, trilobites, blastoids, brachiopods, plant or animal fossils, and especially maclurites are examples. THANKS. ,
  24. I visited Etobicoke Creek again. This time it was near Evans Avenue at a recreational park. There was a softball game going on...the waif thought it might be something called 'rounders' and was intrigued to see how it progressed...I had to drag her the extra 30 meters to the creekbed. Orthocone nautiloids were scattered all over the place, embedded in rocks. The 'she' wanted to find a portion of several segments she could carry home...I get those, but she's never found one. (She eventually brought me a small trilobite, the first I've ever seen). The shell imprints were wonderful, but sometimes worn, and the same species as usual (Bysonnychia and generic bivalves). There were a couple of petrified sponge-like segments, but no good bryozoan colonies. It is fun to find nautiloids because you can sometimes find more than one in a rock (today we tied the record: 4!). Other times they are damaged so you can examine the interior structure. We filled my canvas bag quickly, serenaded by the sound of the softballs being hit off the bat. Finally, near the end of our expedition, the waif saw a segmented rock and tugged it out of the gravel...a portion of a monster cephalapod! Biggest of this genus I've ever seen...and two smaller ones had sheltered in the shell and perished there. What a great time we had.
  25. Can this be a trilobite?

    Is this little ~1.5 cm /half inch disk a trilobite? I've never found one before, and my wife found this today. No detail on bottom...it's all in the image. My attempts to brush off the sand have caused pieces to break off and crumble, so I'm not going to try to expose more. It was in an area full of orthocone nautiloids and byssonichia shell imprints.
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