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Found 73 results

  1. Predation Marks on Hebertella?

    Hi guys so I have this Hebertella occidentalis specimen I collected yesterday from the Credit River at Streetsville, Mississauga, Ontario, which belongs to the Upper Member of the Georgian Bay Formation. Do these look like predation marks? There are also what appears to some crystallized grains inside these marks and I think they could be some sort of calcite. Sorry for the noisy grain of the image, but I hope this will help.
  2. Yesterday the weather in my area hit above the 20 degrees Celsius so I dared myself to go to Streetsville in Mississauga to visit a fossil site I have not been to in 2 years. I now live in Hamilton, Ontario so travelling to Streetsville was intimidating for me using public transit from Hamilton to Streetsville. I have not been to Streetsville by the Credit River ever since I moved from Etobicoke to Hamilton, Ontario and I miss collecting in this vicinity. But I made it. :)) I took pics of exposure sites as these sites are mentioned in one of the literatures describing the Georgian Bay formation. This site exposes the Georgian Bay formation, Upper Member.
  3. Hello guys. I’ve got 2 Late Ordovician reef fossils from Streetsville, Mississauga, Ontario, Canada that I’d like to trade away to make room now that the fossil hunting season is coming back soon. I am trading away the specimens below. These are very nice specimens and comes from an exposure out of access to the ordinary public. Both belong to the Upper Member of the Georgian Bay Formation. Favistina calicina: Stromatocerium huronense:
  4. Hello again! The weather was warmer today, and since I had the kids to myself all afternoon while my husband went to see a movie with a friend, I decided to take the kids out once again. We first tried to do some collecting at Mimico Creek but were unable to because (1) the water was running too high, and (2) they've been doing some construction work around there which prevents us from getting close to our hunting spot. So the kids played at a nearby park for a while, and when I suggested that we check out Etobicoke Creek again, they were all for it (even William!). There was no ice this time, thank goodness, and what follows are just a few pictures of what I found - enjoy! I hope you're all having a wonderful holiday! Monica Orthoconic nautiloid (Treptoceras crebriseptum) chunk: Bivalve (Ambonychia radiata): Brachiopod (Sowerbyella sericea) positive and negative - the positive is just under 2cm long at the hinge line while the negative is just over 2cm at the hinge line (I'll tag @Tidgy's Dad just because I know how much he loves brachiopods ): Viola showing off one of her finds (another T. crebriseptum) with William joining in on the photo:
  5. Hi all! I decided to take the kids for a quick hunt at our local spot along Etobicoke Creek before going to see "Mary Poppins" in the afternoon - enjoy the photos (and enjoy the fact that you weren't out there with us - it was SO cold!!!). The rocks in this area are from the Georgian Bay Formation and are from the Upper Ordovician. Monica The kids spent more time breaking ice with rocks than actually fossil hunting (some of the chunks of ice were quite thick!!!): Viola did take some time away from her ice-breaking duties to check for fossils - she found a cute little orthoconic nautiloid: I also found a small chunk of orthoconic nautiloid with the siphuncle visible: I found two pretty nice crinoid stems for my area as well: Additionally, I found a nice chunk of rock with some ichnofossils in it - any ideas as to what made them? Perhaps @abyssunder and/or @piranha and/or @JUAN EMMANUEL can chime in... Finally, I found a rock with some interesting stuff going on within it such as some brachiopod imprints and what appears to be a tabulate coral. This is interesting because I don't think tabulate corals are found in the Georgian Bay Formation - I guess it's a traveler? Any ideas as to the identities of the specimens in the rock, or are they too water worn? Maybe @Tidgy's Dad and/or @Peat Burns can help... Photo of the interesting rock in situ: Brachiopod imprint photo #1: Brachiopod imprint photo #2: Tabulate coral photo:
  6. Ontario Ordovician conular items

    I've received a couple nice Upper Ordovician additions to my collection courtesy of @JUAN EMMANUEL and I'm finally posting them now... (Thanks Juan!) First, is this Tentaculites or Cornulites? I wish I could get better pics. Manitoulin Fm, Hamilton, ON.
  7. I was reading a book about fossil fishes and there was a chapter dedicated to sharks and their cousins. Apparently there were chondricthyan scales found in the Late Ordovician and Early Silurian rocks. Since I hunt the Late Ordovician Georgian Bay formation in Toronto, Ontario and various Early Silurian formations in Hamilton, Ontario, what are the chances of me coming across these scales? Should I keep my eyes open and what should I look for?
  8. Hi guys, I visited Mimico Creek 2 days after the Canadian Thanksgiving this October which also happened to be a really hot day, which was perfect for exploring. During my time hunting the Georgian Bay Formation of Toronto I would come across these exposures that look “folded”. Does anyone happen to know as to what this really is? Here is a pic I took on that trip I mentioned to show as an example. I would find the same distortion in other parts of Toronto, not just in Mimico Creek, but also in places like along the Humber River and Etobicoke Creek.
  9. Rusophycus osgoodii

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

    Rusophycus osgoodii (author unknown). Found in the Humber River area, Etobicoke, Toronto, Ontario. Georgian Bay formation, Lower Member. Late Ordovician. Trilobite burrow on a limestone with other trace fossils. Dime shown to show approximate size.
  10. Hello everyone, especially those to whom I have sent chunks of Georgian Bay Formation (Upper Ordovician) orthoconic nautiloids! @JohnBrewer @minnbuckeye @WhodamanHD @VTinNorthAB @Kasia @cheney416 @David in Japan @thelivingdead531 @Tidgy's Dad @Ludwigia @joshuajbelanger Eric, I don't think I sent you any, but just in case... @Wrangellian @DLB - I don't think I sent you any, either, but - again - just in case... (By the way - do you need/want any more fossils for your boys?) I think I've been spelling the name of the orthoconic nautiloid incorrectly!!! I've been spelling it as Treptoceras crebiseptum BUT I've been omitting the "r" that's supposed to come after the "b" in the species name SO the correct spelling should be Treptoceras crebriseptum. I'm SO sorry for the error - I hope you can all forgive me Thanks, Monica
  11. Hello there! Since the kids are in day camps this week, and my husband was going to see a movie with his friend this afternoon, I took advantage of the available me-time and went for a little fossil hunt at Etobicoke Creek in Mississauga, Ontario (Georgian Bay Formation, Upper Ordovician). I have some ideas about what I've found, but I'd like your opinions, too: Specimen #1: trilobite resting place (Rusophycus, probably made by a Flexicalymene) Specimen #2: I think this is the monoplacophoran Cyrtolites ornatus - it was very flaky and some pieces fell off, but I tried to glue together the larger pieces Specimen #3: brachiopod positive and negative, but the question is which brachiopod? Thanks in advance for your help! Monica
  12. Hello there! Yesterday, Roger @Ludwigia dropped by for a visit, and we spent the day together checking out my local haunts with Viola. The day started with some coffee and brownies, as well as lovely German gifts from Roger: a Macrocephalites sp. ammonite for Viola (I don't have a picture of it because it's up in her room) and a Brasilia bradfordensis ammonite with a hitchhiking bivalve on the back of the matrix for me!!! See pictures below: We then piled into my car and drove to our first spot: Mimico Creek in Toronto. The fossils here are from the Georgian Bay Formation (Upper Ordovician). Here's a picture of Roger and Viola checking out the site... And one of Roger wielding his hammer... Since I'm still nursing my "fossil elbow", I didn't want to hammer anything; instead, I scraped into the wall of rock and I'm happy to say that I found a couple of sweet little bivalves: one with its two valves partly open (too bad that it's not complete) and another one with some nice ornamentation visible on its shell... @Wrangellian - what do you think? Roger did a little exploring and found some fossiliferous rock further up the wall - I collected two fairly big pieces of this type of rock and, lo and behold, they contained a bunch of brachiopods and their imprints (along with some other goodies)... @Tidgy's Dad - I thought you might like to see them
  13. Hello all! I was lucky enough to spend the afternoon today in the warm-but-not-too-hot sunshine at Mimico Creek in Toronto, ON (Georgian Bay Formation, Upper Ordovician), and I have a couple of things that I'd like you to have a look at: Picture #1: A view of Mimico Creek Pictures #2 and #3: A bivalve and a possible graptolite - what do you think? Pictures #4 and #5: An ichnofossil - do you think it could be Cruziana, or is it something else? Thanks so much for your help!!! Monica
  14. Toronto creek and river finds

    Hello there! I'm still in the process of deciding which fossils to put in my new display cabinets, so I'm looking for some identification help, if possible. All of the items pictured were found in the Toronto area (Georgian Bay Formation, Upper Ordovician) along creeks or rivers - please help me identify them if you can! Thanks in advance! Monica Picture #1: A trace fossil, but of what? Someone suggested trilobite tracks, but I don't know - what do you think? Perhaps @piranha can have a look... Picture #2: This may or may not be a trace fossil - I only just noticed it today. It vaguely resembles trilobite tracks to me (cruziana), but I'm definitely not sure...
  15. Hi all! I just got back from a little hunt with the kids along Etobicoke Creek here in Mississauga, Ontario (Georgian Bay Formation, Upper Ordovician), and I'm wondering if I perhaps found a trilobite pygidium? Here are some pictures: Front of rock (lots of little branching bryozoans and some crinoid bits): Back of rock (where the possible trilobite pygidium is located - circled in red): Close-up of possible trilobite pygidium: What do you think? And, if it is indeed a trilobite pygidium, can it be identified any further? Thanks in advance! Monica
  16. HI all! I was just casually perusing my fossils, and I noticed that there are some black fragments on a rock that contains an orthoconic nautiloid that I found at Etobicoke Creek here in Mississauga, Ontario (Georgian Bay Formation, Upper Ordovician). Are these black fragments fossil-related, or are they something else? Please see pictures below: Thanks for your input! Monica
  17. Hello all! It's been a while since I last put up something to be identified because it's been a very busy few months (we recently sold our old house and have moved into our new house - yay!!!) I did get out with the kids today, though (mainly because Viola has to take her Brownie group's owl all over the place this week, and we thought that it would be fun to take him fossil-hunting ), and there's one potential fossil and one rock that I'd like your thoughts on... Picture #1: Viola with her Brownie group's owl (Oscar) and a fairly large orthoconic nautiloid Picture #2: The potential fossil - could it be part of an Isotelus sp. trilobite? Or is it something human-made? Picture #3: A cool-looking rock - any ideas as to what type it is? Thanks in advance for your help! Monica
  18. Hello, I want to put together some pics of some of the reef material that I have found in Streetsville, Mississauga, Ontario on the banks of the Credit River. It is now winter and I am missing the warm days in which I can go and wade in the warm waters of the river for fun. I just want to compile and share some specimens that whose photos I have not shared with. All the fossils belong to the Georgian Bay formation, Upper Member, which is late Ordovician in age. First is the common coral that displays an enormity of growth forms, Favistella alveolata (Goldfuss, 1826).
  19. Lingulichnus verticalis

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

    Lingulichnus verticalis (Hakes, 1976). Humber RIver area, Toronto, Ontario, Canada. Late Ordovician, Georgian Bay formation, Lower Member. Oblong to tear shaped burrows made by linguliid brachiopod, species unknown. Approximately 15 cm across.
  20. Phycodes flabellus

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

    Phycodes flabellus (Miller and Dyer, 1878). Georgian Bay formation, Lower Member. From the Humber River, Toronto, Ontario, Canada. Late Ordovician burrows organized in a flabellate pattern. Approximately 10 cm across and in width.
  21. So today I was excited when this book came in. It is not in print anymore and I was lucky I managed to order this copy. It talks about the gastropods, cephalopods, and vermes of the Georgian Bay formation of Toronto, Ontario. It even has some nice detailed plates of what can be found in the formation. I never even knew vermes (worms?) can be found in the formation.
  22. Hello everyone! Now that I've started to split some rocks from my local creeks (Mimico Creek and Etobicoke Creek, Georgian Bay Formation, Upper Ordovician), I'd like some help to identify what I've found. @JUAN EMMANUEL, can you help? Rock #1: This type of bivalve is very common, but I can't decide if it's Ambonychia sp. or Byssonychia sp. The book I have says that they both occur in the Georgian Bay Formation, and they look very similar except Byssonychia sp. "has strong radiating ribs rather than (fine radiating) striae," which is what Ambonychia sp. has. (Hessin, p. 148) What do you think? Rock #2: I've started to find this type of bivalve quite frequently. It looks like the pictures of Cymatonota sp. in the book that I have (Hessin, p. 145), but I'm not sure if this genus exists in the Georgian Bay Formation since Hessin states that "it is moderately common in the Verulam and Coburg formations" (p. 145) but he makes no mention of it occurring in the Georgian Bay Formation. Hessin does state that another similar-looking bivalve can be found in the Georgian Bay Formation: Colpomya sp. (p. 146), so perhaps it could be that? Hessin also discusses a bivalve community that is commonly found in the Georgian Bay Formation that consists of Ambonychia/Byssonychia and Modiolopsis (p. 52), so could this be Modiolopsis sp. instead? As you'll see in Rock #3, the bivalves in Rock #1 and Rock #2 are often found together. Rock #3: "front" - bivalve community, but which genera? Rock #3: "back" - bivalve community (which genera?) along with a couple of brachiopods (I think). It may be a bit too difficult to identify the brachiopods, but I'm hoping that someone out there might be able to - perhaps Onniella sp. or Strophomena sp. for the one on top (positive and negative)? Rock #4: positive and negative of a brachiopod - again, it may be too faint to identify but I'll keep my fingers crossed that someone can help me. Maybe Dalmanella sp. or Paucicrura sp. or Resserella sp.? Thanks everyone! Monica
  23. Stromatocerium huronense

    From the album Georgian Bay Formation (Upper Member) Outside of Toronto, Ontario

    Stromatocerium huronense (Billings, 1865) Late Ordovician stromatoporoid sponge. Found along the Credit River at Streetsville, Mississauga, Ontario. Collected as a loose specimen, most likely coming from the Stromatocerium reef of the exposure this came from. Georgian Bay formation, late Ordovician. There is a tiny Favistella alveolata coral colony growing on the edge of the specimen, perhaps this was a commensalistic relationship? Specimen is 12 cm long. However this species in the exposure where it came from can grow beyond a foot in diameter as mounds.
  24. Favistella alveolata

    From the album Georgian Bay Formation (Upper Member) Outside of Toronto, Ontario

    Favistella alveolata (Goldfuss, 1826) 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.
  25. Homotrypa sp. (streetsvillensis?)

    From the album Georgian Bay Formation (Upper Member) Outside of Toronto, Ontario

    Homotrypa sp. (streetsvillensis?, Dyer, 1925) Georgian Bay formation, late Ordovician. Plate of unidentifiable bryozoa. Found as a loose specimen on an exposure on the Credit River at Streetsville, Mississauga, Ontario. Approximately 12 cm long and 10 cm wide. Comes from the Homotrypa streetsvillensis zone layer of fossiliferous limestone full of bryozoans. The layer is around 18 inches to 2 ft thick, as described by W.S. Dyer in his "Stratigraphy and Paleontology of the Credit River" on pg. 50.
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