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Found 309 results

  1. Today Deb and I made the two hour drive up to just outside the town of Formosa, Ontario, to have a look at the Formosa reef limestone, which is part of the Amherstburg Formation. This road cut is the type locality for this material, and it was humbling to be at the exact same location that researchers of yesteryear such as Ludvigsen and Fagerstrom derived their material that formed the basis of their published work on it. Here are some shots of the road cut. Hardly does it justice. This represents a single, massive biohermal knoll. I've wanted to visit this site for a while now, having read two key papers on it. Most of the non-coral fossils are found on the south edge of the cut, as it is assumed that this was the windward side of the knoll that captured much of the debris swept in by the currents.
  2. No Idea Where to Start...

    My 5 year old found this near a river edge in Southern Ontario. Any ideas?
  3. Hi all, It's been a while since I posted a trip report but I was feeling like posting last evening as well as testing out my new photography rig. I moved houses two years ago and lost my lovely brick wall backdrop (the exterior of back of the house) which allowed photography in natural light. The new house is all vinyl siding outside and I have more shade so less opportunity for good sunlit pictures. However, one corner inside the house has a bricked area where a wood burning stove used to be so I have decided to set up some lights there. The pics came out ok so let's proceed with the report. I recently went up to the St. Mary's quarry in Bowmanville, Ontario on a scheduled trip with the local Scarborough club and also stopped off at Arkona while in Canada. I did pretty well at Arkona where I found four Eldredgeops trilobites and two Blastoids among other finds. Nucelocrinus elegans from the Hungry Hollow member of the Widder formation. Sorry, no pics of the Trilobites due to some back spasms but I got these pics of a nice Atactotoechus fruiticosus branch also from the Hungry Hollow Member of the Widder formation. Then I went to the St. Mary's quarry on Sunday where I took a tumble down the rock pile and hurt my ribs. Lucky for me my hard hat took the brunt of the impact my head made with the rocks. With nothing broken and still able to move around, I stayed closer to the ground and found this partial, eroded Isoltelus sp. that is inverted and still shows the Hypostome in place. I also found a plate with Graptolites but that was too heavy to hold and photograph last night. I'll post it tomorrow maybe. Finally, I drove home on Monday and stopped off at a place in New York where some of the Kashong Shale member of the Moscow formation is exposed and found these two surprises. A cephalon of a Dipleura dekayi with some of the shell material eroded away. I think the eye is intact and waiting to see again once some rock is removed. And here is a closeup of the shell on top where you can see the stippled pattern where sensory pits used to be. Lastly I found a pygidium that I am not sure of the genera on. Possibly a Basidechenella sp.? So not a bad trip at all, despite the injury. Good news is that I am healing nicely but still have some soreness and muscle spasms. I'm looking forward to my next trip up in the spring and hopefully will avoid the health scares.
  4. 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
  5. New fossils

    Hi yesterday I went to the Ancaster gem and fossil show I got a couple things just wondering what do you think of them? First to last theropod bone fragment from cedar mountain formation Utah the they said it was found with identifyable bones that are theropod next dinosaur coperlite from Madagascar mahajanga formation last triceratops tooth hell creak Montana.
  6. 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
  7. 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.
  8. Fossils from Etobicoke Creek

    We took our girls fossil hunting near our house for the first time. We found rocks with lots of little brachiopods but I also found this. Is this a cross-section of a cephalopod maybe?
  9. A little help please

    I found this last week Pretty cool kinda looks like a squished dinosaur haha what is it
  10. 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?
  11. 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 equivalent 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
  12. Branching Bryozoa from Brechin, Ontario

    From the album Ordovician

    Parvolhallopora sp. (branching bryozoans) Upper Ordovician Verulam Formation James Dick Quarry Brechin, Ontario
  13. I was able to fit in some prospecting for new sites while the missus had a week off from work. Obviously I couldn’t monopolize all the vacation as the main purpose was to visit a relative and lounge on a beach. Regularly accessible and productive Ordovician sites in Ontario are few and far between, mostly relegated these days to the biannual trip to the quarry in Bowmanville, or to the creeks around the greater Toronto area (GTA). Trilobite collecting in Ontario is massively curtailed by a confluence of factors sadly common in so many other areas: development, quarries that no longer permit access (even to clubs), laws governing protected areas, and over-collecting. We have a rich abundance of trilobites in Ontario, just as in New York, but accessible sites remain a problem. This means defaulting to the traditional method of prospecting new potential areas, and even putting a hard shoulder into shovelling a lot of soil to expose bedrock. This means smaller areas that are more easily exhausted. A pic of our haul from the two spots:
  14. 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.
  15. Bivalve (Ambonychia)

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

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

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

    From the Georgian Bay Formation.
  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. 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
  20. 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?
  21. 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.
  22. 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...
  23. 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.
  24. 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?