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  1. Jeffrey P

    Nautiloid from Formosa Reef, Ontario

    From the album: Middle Devonian

    Spyroceras nuntium Nautioloid Orthocone with exposed chambers and siphuncle Middle Devonian Amherstberg Formation Detroit River Group Formosa Reef Formosa, Ontario A generous gift from Kane
  2. JUAN EMMANUEL

    Summer Hunts of 2023

    I have had multiple trips this summer to my favourite localities in Hamilton, Ontario and Toronto. I dont think the winter of this season was severe to render a great deal of erosion since I couldnt pick out a lot of material surface wise. My first trip is at the Niagara Escarpment of Hamilton in which I visit many formations of the Cataract and Clinton Groups. Always keep an eye out on your overhead! These rocks of the Whirlpool sandstone (Cataract Group) on top of the Queenston formation can drop on any unsuspecting person! Below are some partial pentamerid brachiopods Pentameroides subrectus of the Reynales formation at Hamilton, Ontario. They look like pecans. My next summer trips were at the Humber River area in Toronto. I visited my favourite spots to check out what I can surface collect, since I was carrying light materials with me on those days without a hammer and chisel. Both the formations exposed at the Humber River and Mimico Creek belong to the late Ordovician Georgian Bay formation. And recently this Saturday I was at Mimico Creek in Toronto revisiting my old hunting grounds. I came across a nice Treptoceras crebiseptum slab, which I chiseled out of the shale with my hammer- before it fractured into many pieces. I also found a nice trace fossil which had a Cruziana sp. on it, but it had some oil grease on it for some reason. Usually, if the winter was severely cold, a portion of an exposure like this would be falling down to the bottom, revealing surface-collecting fossils. An interesting trace fossil i found but chose not to keep. In situ of the Treptoceras plate I chose to extract. Below is the nice trace fossil i decided to keep. Im a very picky person when collecting and I only the best specimens I can find. Another entirely separate exposure at Mimico Creek that I visited on the same day.
  3. JUAN EMMANUEL

    Pentameroides subrectus

    From the album: Hamilton, Ontario Fossils

    Pentameroides subrectus (Hall and Clarke, 1892). One of the valves of this mid-Silurian brachiopod. Found at a creek along the Niagara Escarpment in Hamilton, Ontario. Reynales formation, Clinton Group.
  4. JUAN EMMANUEL

    Pentameroides subrectus

    From the album: Hamilton, Ontario Fossils

    Pentameroides subrectus (Hall and Clarke, 1892). Found at the Niagara Escarpment on a creek in Hamilton, Ontario. Reynales formation, Clinton Group. Mid-Silurian. This brachiopod steinkern has specks of pyrite on it.
  5. From the album: Corals

    1cm. Shot under the microscope. A button coral from Hungry Hollow, Ontario. Middle Devon, Givetian.
  6. GreatHoatzin

    Trilobite Pygidiums from Tobermory?

    I found a couple of these while staying in the immediate Tobermory area a few weeks ago. To my untrained eye they appear to be trilobite pygidiums. Is there any way of possibly determining their identity? I took these photos around the time of discovery, and I can take higher quality ones if needed. Both specimens are 1.8cm and 1.1 cm in length.
  7. Crowdsourcing / help request! I'm putting together a review article for the fossil collector community on the Devonian rocks of the American midcontinent, which I've defined as the gray area on the map below plus southwest Ontario. I'm hoping to include a section in which I highlight the midcontinent fossils of greatest renown for each of a number of taxa (list below). (I purposely leave "renown" as a somewhat squishy quality open to multiple interpretations.) I would appreciate (1) your nominations of any midcontinent Devonian fossils of great renown that I have failed to capture in the list below and (2) your assistance in filling in the blanks marked with "????" Thank you! List is below. Microbes: ???? Marine algae: ???? Sponges: Formosa Reef Limestone, SW Ontario Rockport Quarry Limestone, NE Michigan ???? Corals: Widder Formation, SW Ontario Jeffersonville Limestone, S. Indiana Petoskey Limestone, NW lower Michigan Hyolithids: Arkona Formation, SW Ontario Tentaculitids: Arkona Formation, SW Ontario Conulariids: ???? Bryozoans: ???? Brachiopods: Silica Formation, NW Ohio ???? Pelecypods: Arkona Formation, SW Ontario ???? Gastropods: Rogers City Limestone, NE Michigan ???? Non-ammonoid cephalopods: ???? Ammonoid cephalopods: Arkona Formation, SW Ontario Pelecypods: Dundee Limestone, NW Ohio Arkona Formation, SW Ontario Rostroconchs: Dundee Limestone, NW Ohio Trilobites: Silica Formation, NW Ohio Arkona Formation and Widder Formation, SW Ontario Haragan and Bois d'Arc Formations, SE Oklahoma Non-ostracode crustaceans: Chagrin Shale, NE Ohio Arkona Formation and Widder Formation, SW Ontario Silica Formation, NW Ohio Echinoderms: Arkona Formation, SW Ontario Silica Formation, NW Ohio Thunder Bay Limestone, NE Michigan Graptolites: ???? Fish: Rockport Quarry Limestone, NE Michigan Columbus Limestone, central Ohio Cleveland Shale, NE Ohio Woody plants: Ohio Shale, Ohio Herbaceous plants: Grassy Creek Shale, E Missouri
  8. pikapancreas

    Fossil ID - Grimsby Beach, Ontario

    Hi, went to Grimsby Beach and was looking at the rocks. Found some that seemed interesting to me, and thought maybe they could be fossils. Please let me know as I barely have any experience with fossil hunting.
  9. A few finds from this weekend. Fortunate enough to have a cottage on Lake Erie, fairly close to Rock Point Provincial Park which is known for it's exposed fossils of a 350 million year old coral reef. About half were found on the beach itself and the other half in the crushed gravel part of the driveway. I'd imagine the beach will keep yielding new finds after every storm, here is hoping for it anyway.
  10. I'm pretty new to fossil hunting, I found this in some landscaping outside my work. I've done some research myself, i live in Ontario which is mostly Devonian era fossils, and I've read coral is pretty common. Could be entirely wrong and just hoping for some clarification!
  11. Just now getting through some camera rolls and specimen photo-taking of a two week trip in May. I covered about 2000 miles across Ontario and Quebec, and this is a sample of what I saw and/or collected. I won't be mentioning any specific sites, so I'll just number them. Site 1: Pleurocystites Pleurocystites close-up A crappy Calyptaulax Possibly a Flexicalymene senaria, disarticulated impression. Leaverite. A busted, incomplete cheirurid. Leaverite. Large Isotelus gigas cheek. (Also leaverite ) Looking very carefully, just about complete and really smashed Isotelus gigas. The chisel tip is an inch wide, so the trilobite is about 5.5 inches. Not worth taking home, either. This I did take home. Not sure if this will be a complete Bumastoides. A big Gabriceraurus. The head is there, but smashed in. A c-grade bug.
  12. Alexthefossilfinder

    Unknown shape in chert, possibly Ceraurinus

    Here's something I found a few months ago. There are lots of bits of brachiopods which seem to have been preserved in their original perfect shape instead of the casts I usually find. It's what's on top of them that interests me. It looks like it could be a trilobite cephalon, if that's the case then the closest match I could find was Ceraurinus sp. I'm pretty sure I saw something to do with a crinoid that looked similar though I haven't been able to find it again. Any other ideas?
  13. Kane

    Ordovician sponges?

    While splitting upper Ordovician shales in Ontario, I encountered these and reasoned it was possible these were sponges (owing to the presence of what appear to be spicules). I have encountered sponges in the upper Ordovician limestones, but not in the shales. The solo specimen measures about 1 cm. The cluster piece contain specimens slightly smaller than that. Firstly, I just wanted to rule out these as simply artifacts of mineralization. If they are sponges, I was curious if anyone had a bead on their genus as sponges are well outside my wheelhouse.
  14. Taxonomy from Fossilworks.com. Synonym Ectenocrinus canadensis Billings 1857. Ectenocrinus simplex can be well recognized by its distinctive trimeric columnals. References: Hall, J. (1847). Containing descriptions of the organic remains of the lower division of the New York system (equivalent of the Lower Silurian rocks of Europe). Paleontology of New York 1:1-338. Titus, R. (1989). Clinal Variation in the Evolution of Ectenocrinus simplex. Journal of Paleontology Vol. 63, No. 1 (Jan., 1989), pp. 81-91. Warn, J. and Strimple, H. L. (1977). The disparid inadunate superfamilies Homocrinacea and Cincinnaticrinacea (Echinodermata, Crinoidea), Ordovician-Silurian, North America (Bulletins of American Paleontology, 72, 138 p. H. Alghaled (2019). An Upper Ordovician faunal assemblage from the Neuville Formation of Québec, including an exceptionally preserved soft bodied sea anemone, Paleocerianthus neuvillii n. sp., Université de Montréal. MSc. thesis.
  15. Hey everyone, I wanted to show this fossil I found back in November as I think it's pretty cool. On my first trip that involved splitting shale, I found this Triarthrus cephalon, which is cool on it's own but it was only later that I looked back to it and realized the particular shape that resides on top of and below the cephalon. This trilobite appears to have been buried with the shell of a nautiloid! Please excuse if it's hard to see, the first few pictures were really difficult to get and my phone isn't the best at taking close up shots as it is. The 1st and second pictures represent the two halves of the piece, while the 3rd and 4th pictures are the same thing with a rough tracing of where the shell is. The 5th picture is an older picture I came across while making this post that while blurry shows the shaping somewhat decently. So yeah, there's a pretty cool find in my collection, I don't know how rare this kind of thing is or how they ended up together but I think it's really fascinating anyway!
  16. I found this specimen in 2020 and donated it to the Royal Ontario Museum later that year. A paper is to be published very soon formally describing it! It's a roughly 7cm wide mimetasterid marrellomorph - the only marrellomorph know from the Ordovician of Canada, and one of a handful of such arthropods recorded worldwide. I found my very first trilobite in 2014. The members of this forum helped my ID it, learn more about the stratigraphy of my area and what tools to use to find more. Thanks to that base of knowledge,, the last 7 years have seen paleontology become an increasingly important part of my life. This incredible fossil in the culmination of what started right here on TFF- so thank you! 1) False color composite image courtesy of Enrico Bonino: 2) Part 1 3) Part 2 4) Handing-off the specimen to JBC
  17. JUAN EMMANUEL

    Conularia formosa

    From the album: Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Conularia formosa (Miller and Dyer, 1878). Georgian Bay formation, Lower Member, Late Ordovician. Found along the Humber River of Toronto. This specimen was found when I was smashing some of the limestone of a bedding and this popped out. This is the only Conularia formosa I have ever found along the Humber River.

    © JUAN EMMANUEL

  18. JUAN EMMANUEL

    Modiolopsis ovata

    From the album: Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Modiolopsis ovata (Conrad, 1842). Georgian Bay formation, Humber member, Late Ordovician. Collected from the Humber River area of Toronto, Ontario. The body had been calcite replaced and was found in the shale. There are also flecks of pyrite which are the gold coloured marks on the right side.
  19. JUAN EMMANUEL

    Roadcut in Hamilton

    Today I decided to go and visit a roadcut that I red on one of the Silurian literatures I got my hands on (a big thank you to those that led me to those PDFs relating to the geology of the Niagara Escarpment). It turns out the roadcut on the Niagara Escarpment is near my home which is a pleasant suprise to me, considering that I have been disappointed by the Queenston formation. This roadcut is actually several exposures that run on an access road that can lead one to the upper part of Hamilton, Ontario. Here is the exposure I decided to explore. I chose this exposure as the access is a busy boulevard with cars driving by with no sidewalks and pedestrians. I had several people honk and call out to me as I was exploring the site. Maybe I should have worn a safety vest of some sort? Is that even necessary?
  20. Found in little creek around town, late Ordovician period in Southern Ontario, absolutely stumped on what it is. Any ideas are welcome, thanks in advance! Sorry for the low quality photos, these are the best I could get, fossil is 1cm (Long) with little groves.
  21. This mystery fossil was found in a rock pile in the Caledon, ON area, not far from the Niagara Escarpment. When I split the rock, it was revealed and split into convex and concave halves that then fit together. It is almost perfectly circular, and is 13mm (0.51 inches or just over 1/2 inch) in diameter. There are clearly many other fossils within this rock, but I fear splitting it further and destroying this mystery fossil without ID on it first. I've taken it to a few other hobbyists I know in person, but they has also been unable to ID it, and the best guess I've received is that it some sort of Brachiopod. I remain unsure, as there are no ridges or grooves, and the edge is very smooth. Also the closest looking brachiopod species I could find was the "Obiculoidea" which is normally found in the Texas to Ohio areas. Since the fossil is "bisected" perpendicular to the rock layers, I've had the thought that it could be a cephalopod (some sort of orthocone?) shell, but can't find good cross section images of such fossils that look the same. However the smooth-ness, central void, and convex & concave split would fit what I see from cephalopod fossils cut open length-wise. Let me know what you guys think!
  22. artur

    Brachiopod Burrows?

    Found in Southern Ontario, late Ordovician. Would these be the fossilized burrows of the Brachiopods? Or just odd erosion? Note the trace fossils around the "Burrows".
  23. artur

    Arthropod trace Fossil?

    Found in Southern Ontario (Late Ordovician), in a small creek bed with little erosion. I've never seen anything like it before, I think it may be the Mesosoma of a small eurypterid? Any feedback is welcome!
  24. Alexthefossilfinder

    Rugose coral or nautiloid shell imprint?

    Here's a find from last summer. I originally classified this as a nautiloid, though I think it could be a horn coral too. Unfortunately I'm not very familiar with the inner workings of either and I can't see much that could point one way or another. I do think it's a nautiloid judging by how straight it is, but I would appreciate feedback from anyone with more experience.
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