Rogue Embryo Posted March 3, 2022 Share Posted March 3, 2022 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! Link to comment Share on other sites More sharing options...
Kane Posted March 3, 2022 Share Posted March 3, 2022 I wouldn't rule out trilobite or gastropod fragment on account of the shell texture and colour. It would be good to do some light scribing to reveal a bit more to be certain. 1 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
FossilDAWG Posted March 3, 2022 Share Posted March 3, 2022 The structure does not look like a bryozoan. Bryozoans are colonial animals, with each individual occupying a tube, so the cross section should consist of sections through longitudinal tubes. In biofoliate bryozoans there are two layers of tubes, one facing each way, with a plane in the middle dividing the right- and left-facing layers. Your specimen does not have that structure, rather it appears to be solid. It seems to be a section through a shell, possibly trilobite, brachiopod, or bivalve. Don 1 2 Link to comment Share on other sites More sharing options...
Northern Sharks Posted March 3, 2022 Share Posted March 3, 2022 Looks "trilobitey" to me too, like the edge of a cheek. There's no limit to what you can accomplish when you're supposed to be doing something else Link to comment Share on other sites More sharing options...
Rogue Embryo Posted March 3, 2022 Author Share Posted March 3, 2022 Thanks people for your ideas! I don't have equipment for scribing, but will do a deep dive into trilobite anatomy. Cheers, Camille Link to comment Share on other sites More sharing options...
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