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Unknown fossil found at Don Valley Brick Works, Toronto, ON, Canada


hong

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Hi everyone, I found some interesting fossils/stones today, its around 8 cm each in length. Can anyone identify them? Thanks a lot!

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Edited by hong
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Bivalve. Some type of elongate clam. Just the outline is left and maybe a little if the thin shell along one edge. 

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The rock layer underlying Toronto is late Ordovician (Georgian Bay Formation). Not sure what this is but thought the time period might help.

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I agree with the others - they are definitely bivalves.  To me they look like they could be from the family Modiomorphidae, which includes genera such as Cymatonota, Ortonella, Modiolopsis, Colpomya, and Pholadomorpha (all of which can be found in southern Ontario).  Congrats on the finds!

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