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Showing results for tags 'georgian bay formation'.
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Trip to Etobicoke Creek (Georgian Bay Formation, Upper Ordovician)
Rogue Embryo posted a topic in Fossil Hunting Trips
My first visit to Etobicoke Creek in several years yielded a few finds, but will search other spots along the creek in the coming weeks. Some cephalopod fragments: A "misshapen" cephalopod? An outline on a perfectly flat rock: Not sure what these are; not much detail: Two of the better Pholadomorpha pholadiformis specimens: Camille
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ID help on two fossiliferous rocks, please? Georgian Bay Formation / Mimico Creek, Toronto (Upper Ordovician)
Rogue Embryo posted a topic in Fossil ID
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Upper Ordovician brachiopiod - Strophomena sp. (?)
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 25, 2021© Camille Martin
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Upper Ordovician bivalve - Ambonychia radiata
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 25, 2021© Camille Martin
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- ambonychia radiata
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Upper Ordovician bivalve - Ambonychia radiata
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 25, 2021© Camille Martin
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- ambonychia radiata
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Upper Ordovician bivalve - Ambonychia radiata
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 25, 2021© Camille Martin
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- ambonychia radiata
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Upper Ordovician bivalve - Ambonychia radiata (?)
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Details are indistinct, but based on shape and location (Georgian Bay Formation), possibly Ambonychia radiata. Field collection by Camille Martin, September 25, 2021© Camille Martin
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From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, August 25, 2011© Camille Martin
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Upper Ordovician ichnofossil - bifungites (?)
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
This dumbbell-shaped ichnofossil measures about 7.5 cm long, including the terminations -- considerably longer than the Ordovician and Devonian bifungites specimens described in Pickerill and Forbes, "Bifungites of Halli from the Ordovician (Caradocian) Trenton Limestone of the Quebec City Area" (1977). Field collection by Camille Martin, May 28, 2018© Camille Martin
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From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 14, 2021© Camille Martin
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From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 14, 2021© Camille Martin
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From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 14, 2021© Camille Martin
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- georgian bay formation
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From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 14, 2021© Camille Martin
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- georgian bay formation
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From the album: Camille's fossils - Georgian Bay Formation
Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Orthocerida Family: Proteoceratidae Genus: Treptoceras Species: T. crebriseptum Author Citation: Hall (1847) [then known as Actinoceras crebriseptum] Eon: Phanerozoic Era: Paleozoic Period: Ordovician Sub Period: None Epoch: Late Georgian Bay Formation Mimico Creek Toronto Ontario, Canada Field collection by Camille Martin on 09/14/2021 Comments: Sephuncle segment compression ratio (SCR) = 1.0 EQUIAXIAL T. crebriseptum is a species of Treptoceras found in the Georgian Bay Formation at Toronto. See Robert C. Frey, "Middle and Upper Ordovician Nautiloid Cephalopods of the Cincinnati Arch Region of Kentucky, Indina, and Ohio" (1995) 25-26, 45.-
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Plications on fold: 4 Plications on sulcus: 3 Plications on flanks: 8 Hinge line = 30 mm Width = 33 mm
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Was examining several of my rocks (sandstone & mudstone) that have light-coloured spots, such as the images of 3 rocks below. I read "Reduction Spots in the Mesoproterozoic Age: implications for life in the early terrestrial record" (Spinks, Parnell, Bowden) -- well, the little that I could understand -- and was wondering whether any of these 3 rocks might be an example of this. The spots in my rocks do not seem to have the "dark concretionary cores" that the article says are often present in the spots, but I was curious to know more. I'm having doubts but thought I'd ask. Thanks for any ideas. Rock #1: Rock #2: Rock #3:
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Found a couple of days ago along Lake Ontario, in Toronto: This is a follow-up to my previous post some weeks ago: I stand corrected about the "graptilites" part! Turns out the fossils on that rock were bifoliate bryozoan. So I'm wondering if the present specimen submitted here is also a bifoliate bryozoan. Thank you!
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I know crinoid "forests" are a dime a dozen, but still its nice to find one so packed . . . And some bryozoan pieces, my first that I can identify with a bit of confidence . . . but please correct if I'm mistaken. Cheers!
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Here are a few more of my recent finds at Mimico Creek. As always, I'm grateful for comments and IDs to increase my knowledge! By the way, I'm interested in connecting with others in the Toronto area to go on fossil hunts. Cheers! Camille
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Hey everyone! I found my first fossil last weekend in a creek near the Don River in midtown Toronto. From my knowledge reading through this forum, it seems to be packed with crinoid stem fossils. I’d really appreciate a confirmation, to learn more about the age of the fossil and maybe even the species.
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New hunting location at Etobicoke Creek (Georgian Bay Formation)!
Monica posted a topic in Fossil Hunting Trips
Hi everyone! The last few times I went out fossil hunting, I tried to find new exposures along Mimico Creek in Toronto. All of these trips were unsuccessful, so I thought I'd try to find a new site along Etobicoke Creek instead. Today I checked out a new location and fossils were found - hooray!!! Here are some photos of what I found: (note that all of these fossils are from the Upper Ordovician Georgian Bay Formation) First, the trilobite pieces (@piranha - please let me know if I've identified them correctly - thank you! ): Isotelus maximus: cephalon (with a nice Ambonychia radiata bivalve next to it) and a chunk of thorax (circled in red) Flexicalymene granulosa: 2 cephala (one is quite large and the other (if it is a F. granulosa cephalon - I'm not sure if it is) is small and is circled in red), 2 pygidia (circled in red), and 1 slice through a thorax (circled in red): More to come...
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- etobicoke creek
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I am posting some pics of my trip to Etobicoke, Ontario on the Georgian Bay formation, Lower Member. I only went a couple times to different localities in Etobicoke since the lockdown put a strain on my wanted public transportation service. I visited the Humber River and Mimico Creek. I only came home with 2 specimens from the Humber while I didnt take anything home from Mimico. This year's winter has been mild so that is why I believe there has not been any turn around for [good/unusual/extraordinary] material. I recall back in 2015, which had a rough and severe winter, generated more good fossils for me than this year's mild winter. I didnt have to do a lot of digging and just surface collecting just to find good specimens when the winter is rough before the following Spring and Summer. The ice didnt form thick and did not cause any strong erosion in the creeks in my opinion. These pics are from the Humber River This right below is a partial Treptoceras crebiseptum I collected along the bank. Sorry for the blurry pic, this one is a Pholadomorpha pholadoformis.
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Hi guys I recently found this nice sized Pholadomorpha pholadoformis at the Humber River in Etobicoke, Ontario. It belongs to the Georgian Bay formation and is late Ordovician in age. The specimen has pyrite in addition to the black film. Does this fossil have some sort of pyrite disease to it?
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So I have been looking at my collection and it baffles me whether these two specimens are the same species with just different growth forms due to their deposition environments or are they entirely different species from each other? These stromatoporoids both come from the same locality (Streetsville, Mississauga, Ontario) in the Upper Member of the Georgian Bay formation, late Ordovician. Can anyone provide me with any PDF on late Ordovician stromatoporoids so I can nail down the differences between Stromatocerium and Labechhia? On the site where I collected these, I have also found mounding round stomatoporoids ranging around 4 inches to over 1 ft in diametre. I think this must be Stromatocerium. With the stromatoporoid with the prominent mamelons I have found it encrusting Prismostylus sp. specimens on the locality (what an odd association). This stromatoporoid, from my experience with the locality, usually just grows over the size of an open hand. Is this Labechia, the one with prominent mamelons?
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