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Found 302 results

  1. This is a work in progress, a kind of "master list" of trilobite species found in Ontario according to the available literature. In some cases, stratigraphy and taxonomic names have been modernized. Correlations are added where it is expected that species found in corresponding strata could be found in Ontario rocks. I have not included trilobites from the Hudson/James Bay area as there are a number of species there that still are in need of formal description. There are also a number of uncertainties that require more literature support before they are included here. I'll update this as more resources come available. UPDATED: Sept 15, 2019 Period Formation/Member Taxon Correlated Species Devonian Kettle Point (1) Eldredgeops rana Widder (upper) (6) Greenops widderensis Eldredgeops rana Pseudodechenella ?rowi Dipleura dekayi Crassiproetus canadensis Bellacartwrightia jennyae Widder (Hungry Hollow) (5) Greenops widderensis Eldredgeops rana Eldredgeops iowensis southworthi Pseudodechenella arkonensis Crassiproetus canadensis Arkona (3) Stummiana arkonensis Eldredgeops rana Pseudodechenella arkonensis Dundee (8) Coronura aspectans Coronura myrmecophorus Trypaulites calypso Crassiproetus crassimarginatus Eldredgeops rana Pseudodechenella planimarginata Pseudodechenella rowi Odontocephalus selenurus Crassiproetus sibleyensis (Michigan) Pseudodechenella nodosa (Ohio) Lucas (1) Crassiproetus crassimarginatus Amherstburg (5) Acanthopyge contusa Mannopyge Halli Mystrocephala stummi Crassiproetus crassimarginatus Harpidella sp. Coniproetus folliceps (New York) Bois Blanc (8) Terataspis grandis Anchiopsis anchiops Burtonops cristata Crassiproetus crassimarginatus Pseudodechenella planimarginata Otarion sp. Calymene platys Trypaulites erinus Silurian Guelph (2) Bumastus ioxus Bumastus aboynensis Eramosa (1) Encrinurus ornatus Amabel (8) Calymene niagarensis Calymene sp. Kosovopeltis acamus Planiscutellum rochesterense Ekwanoscutellum ekwanensis Hadromeros niagarensis Bumastus ioxus Sphaerexochus romingeri Rochester (8) Dicranopeltis fragosa Dalmanites limulurus Trimerus delpinocephalus Arctinurus boltoni Calymene niagarensis Calymene sp. Liocalymene clintoni Bumastus ioxus Decoroproetus corycoeus (New York) Diacalymene sp. (New York) Illaenus insignis (New York) Radnoria bretti (New York) Fossil Hill (1) Bumastus ioxus Cataract (5) Acernaspis spp. Leonaspis cf. illinoiensis Calymene niagarensis Calymene sp. Liocalymene clintoni Ordovician Georgian Bay (7) Ceraurus sp. Ceraurinus sp. Cryptolithus bellulus Flexicalymene granulosa Proetus chambliensis (Carlsbad Fm) Isotelus maximus Triarthrus sp. Blue Mountain/Billings (11) Ceraurus sp. Cryptolithus bellulus Isotelus sp. Flexicalymene sp. Pseudogygites latimarginatus Sphaerocorphye robusta Triarthrus canadensis Triarthrus eatoni Triarthrus glaber Triarthrus rougensis Triarthrus spinosus Lindsay (28) Amphiichas ottawaensis Anataphrus sinclairi Calyptaulax callicephalus Ceraurinella trentonensis Ceraurinus marginatus Ceraurinus serratus Ceraurus matranseris Ceraurus milleranus Cryptolithus sp. Eobronteus sp. Erratencrinurus vigilans Failleana indeterminata Flexicalymene croneisi Flexicalymene senaria Hibbertia ottawaensis Hypodicranotus strialatus Isotelus latus Isotelus “mafritzae” ( A & B ) Isotelus ottawaensis Leviceraurus mammiloides Meadowtownella trentonensis Otarion laurentinum Physemataspis pernodosus Pseudogygites latimarginatus Sceptasps lincolnensis Thaleops depressicapitata Thaleops latiaxiata Thaleops laurentiana Verulam (41) Achatella achates Amphilichas ottawaensis Anataphrus sinclairi Bathyrus (Raymondites) ingalli Bufoceraurus bispinosus Bumastoides bellevillensis Bumastoides billingsi Bumastoides milleri Calyptaulax callicephalus Ceraurus globulobatus Ceraurus milleranus Ceraurus plattinensis Ceraurus pleurexanthemus Ceraurinella sp. Ceraurinella trentonensis Cybeloides plana Cyphoproetus wilsonae Dimeropyge gibbus Dolichoharpes reticulata Ectenaspis homalonotoides Eobronteus sp. Eomonorachus intermedius Erratencrinus vigilans Failleana indeterminata Flexicalymene senaria Gabriceraurus dentatus Hemiarges leviculus Hemiarges paulianus Hibbertia ottawaensis Hypodicranotus striatulus Isotelus gigas Isotelus iowensis Isotelus ottawaensis Kawina trentonensis Meadowtownella trentonensis Otarion laurentinum Physemataspis pernodosus Sceptaspis lincolnensis Sphaerocoryphe robusta Thaleops ovata Thaleops laurentiana Bobcaygeon (32) Amphilichas ottawaensis Apianurus sp. Bathyrus (Raymondites) ingalli Bathyrus (Raymondites) trispinosus Bufoceraurus bispinosus Bumastoides milleri Calyptaulax callicephalus Ceraurus globulobatus Ceraurus plattinensis Ceraurus pleurexanthmeus Ceratocephala sp. Ceraurinella sp. Ceraurinella trentonensis Cybeloides plana Cyphoproetus wilsonae Diacanthaspis parvula Dolichoharpes reticulate Ectenaspis homalonotoides Eomonorachus intermedius Erratencrinus vigilans Failleana indeterminata Flexicalymene senaria Gabriceraurus dentata Hemiarges paulianus Isotelus gigas Isotelus iowensis Meadowtownella trentonensis Physemataspis pernodosus Sceptaspis lincolnensis Thaleops conradi Thaleops ovata Thaleops laurentiana Gull River (20) Basiliella barrandei Bathyurus acutus Bathyurus extans Bathyurus johnstoni Bathyurus superbus Bathyurus (Raymondites) bandifer Bathyurus (Raymondites) longispinus Bumastoides billingsi Bumastoides milleri Bumastoides porrectus Calyptaulax callicephalus Ceraurus sp. Cybeloides ella Cybeloides plana Failleana indeterminata Isotelus sp. Thaleops angusticollis Thaleops conradi Thaleops latiaxiata Thaleops ovata Oxford (5) Gignopeltis convexus Gignopeltis rarus Goniotelina subrectus Isoteloides canalis Strotactinus salteri SPECIES TOTAL: ~132
  2. Hello there! Last month, I visited the Credit River in Mississauga, Ontario, Canada (Georgian Bay Formation, Upper Ordovician) to look for some fossilized corals. In addition to a bunch of weathered colonial rugose corals, I found an item that I think is something, but I'm not sure what - perhaps a sponge? Here are some photos of it: Side view - dry: Top view - dry: Top view - wet: Thanks so much! Monica
  3. A little help please

    I found this last week Pretty cool kinda looks like a squished dinosaur haha what is it
  4. Bivalve (Ambonychia)

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

    From the Georgian Bay Formation.
  5. Bivalve (Ambonychia)

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

    From the Georgian Bay Formation.
  6. Prasopora bryozoan

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

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

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

    Partial trilobite from the Collingwood member of the Lindsay (Cobourg) Fm.
  8. 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.
  9. Everyone so far is stumped

    This was found in Cayuga Ontario (Devonian) in 1988 and is still marked in my collection as an unknown. I have had a number of suggestions over the years as to what it is but nothing that screams that's it for sure. I always thought that it was echinoderm of some type but others have suggested eurypterid. Any thoughts. It was found at surface level of an abandoned water filled quarry so there is no assurance that it actually originated at that quarry but it probably did as it looked like the same matrix as the surrounding rock. Please jump in with your thoughts... I would really like to figure out what it is as I have nothing else that remotely looks like this
  10. 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.
  11. Silurian fish?

    I found this concretion in what I believe to be Lockport dolostone, which is silurian in age. At first I didn't think much of it but then I noticed the surface has a faint texture of cracked shell. I was wondering if this could be a silurian ostracoderm like Tremataspis?
  12. 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.
  13. 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.
  14. Hey guys, new collector looking for some wisdom. Over the past year, I've collected over 150 Fossil specimens from the Chatham-Kent Area. The Majority of my collection is Middle-Devonian Corals and Brachiopods, but I've also found some Petrified Wood and Fossilized Bone. I'm at the point where I can't keep track of my collection and want to start labeling and identifying my fossils for documentation and display purposes. What resources do you guys use to identify fossils you've collected in the field? How accurate can I realistically date things?
  15. Graptolite from Mimico Creek?

    Hello there! Well, I tried to take Viola out for a little fossil hunt by Mimico Creek in Etobicoke, Ontario (Georgian Bay Formation, Upper Ordovician) this afternoon because when I checked the forecast this morning it looked like it was going to be ideal fossil-hunting weather - a mix of sun and cloud with temperatures in the mid-20s Celsius. When we arrived, however, it began to rain - we toughed it out and came away with one piece before it began to pour and we called it a day. I was disappointed since I was hoping to spend a few hours there, but the one piece we took home looks like it might have a graptolite on it, which is quite exciting since I have yet to find one in my local haunts. Please check out the photo below and let me know what you think: Thanks in advance for your help! Monica
  16. Hello there! I was inspired by @markjw to check out the Credit River here in Mississauga, Ontario (Georgian Bay Formation, Upper Ordovician) because where I normally hunt there are typically no corals and I'd love to add a couple to my collection. Consequently, I went out for about an hour this morning before the family got up in order to try my luck, and I'm happy to say that I was successful!!! Based on information provided by @FossilDAWG in other threads here on TFF, I think all of my colonial rugose corals are Favistina calcina - here are photos of three of my specimens: Specimen #1 - side view: Specimen #2 - top and bottom views: Specimen #3 - top and bottom views: more to come...
  17. Ice Age Human or Animal Teeth?

    Found an object among rocks which resembles eroded teeth enamel Location: Tobermory, Ontario Dimensions: Length: 4 cm Width: 2 cm Height: ~ 1 cm Any ideas?
  18. Hi. I have heard of Precambrian stromatolites found in the Precambrian rocks of Ontario but I am curious, has there been any reports of Ediacaran or Mistaken Point- like fossils being found in the Canadian Shield of Ontario?
  19. Paleofavosites asper

    From the album Hamilton, Ontario Fossils

    Paleofavosites asper (d’Orbigny, 1850). Coral squashed on grey shale. Found in the Manitoulin Formation of the Cataract Group on the Niagara Escarpment. Locality is the Devil’s Punchbowl, Stoney Creek, Hamilton, Ontario. Early Silurian.
  20. Here is an interesting potential fossil that I found in Oakville, Ontario. From fossils found in nearby rocks, I think this is from the Georgian bay formation which is ordovician in age. I don't know if this is a fossil, it could just be an interesting deposit of oxidized pyrite, but I would appreciate any help identifying this.
  21. Hello everyone! On Monday, I found a beautiful Treptoceras crebriseptum orthoconic nautiloid in a huge rock at Mimico Creek in the Etobicoke/Toronto area (Georgian Bay Formation, Upper Ordovician). It has been suggested that I might have a complete specimen, so I was hoping that someone out there might be able to let me know if this is the case or not. Here are some pictures... Whole specimen: Close-up of the base of the specimen (specimen has been turned over) - note that it is smoothly rounded and shows no septa - is this the fossilized living chamber of the animal? Close up of the tip of the specimen - note that it seems to end before the rock edge - is this the very tip of the animal? Close up of the piece that shattered off the tip of the specimen - note that it also seems to end before the rock edge: Thanks for your help!!! Monica
  22. Greenops from Hungry Hollow

    Hello again! I have one more ID request (for now ). I received this Greenops as a gift, but I think I deleted the email which stated the exact location/formation information - does anyone recognize the matrix that it's on? And is it G. widderensis or is it G. arkonensis? I have a document stating that these two species have been found at Hungry Hollow (near Arkona, Ontario, Canada; mid-Devonian in age) - are there two different Greenops species found at Hungry Hollow or only one (widderensis)? Thanks so much! Monica I'll tag @Kane and @middevonian for this one
  23. Favosites from Hungry Hollow

    Hi there! I'm currently writing labels for my Devonian fossils, and I was wondering if someone out there can identify the following Favosites coral down to species? It's from the South Pit of Hungry Hollow near Arkona, Ontario, Canada, and it's mid-Devonian in age. Thanks so much! Monica Top: Bottom: