Lauren Posted January 28, 2009 Share Posted January 28, 2009 Ok... I have no idea what these are, really, lol. Beetle or leaf impressions? they're kind of deep for leaves, though. I found them all in the same place and they're all a little different. I don't know the age, either. I can post another picture for scale if needed. The second one is the largest, the others are relatively small. Thanks! Link to comment Share on other sites More sharing options...
Guest solius symbiosus Posted January 28, 2009 Share Posted January 28, 2009 They wouldn't be beetles if they were collected in the early Paleozoic. Beetles hadn't evolved yet. I'm thinking that they are molds of brachiopods. Link to comment Share on other sites More sharing options...
Lauren Posted January 29, 2009 Author Share Posted January 29, 2009 Thanks for your reply. That would make more sense, although I really have no idea about the age. I am a newbie but I've never seen anything else that looks like them. Link to comment Share on other sites More sharing options...
pitufopaco Posted January 29, 2009 Share Posted January 29, 2009 Hi I think they are transverse court(cut) of the shell of a gasteropodo. bye. Link to comment Share on other sites More sharing options...
Guest bmorefossil Posted January 29, 2009 Share Posted January 29, 2009 yep thats what I was thinking Link to comment Share on other sites More sharing options...
Lauren Posted January 29, 2009 Author Share Posted January 29, 2009 I can see it now thanks lol Link to comment Share on other sites More sharing options...
Guest Nicholas Posted January 29, 2009 Share Posted January 29, 2009 Definitely at least a bivalve. Link to comment Share on other sites More sharing options...
Lauren Posted January 30, 2009 Author Share Posted January 30, 2009 Yeah, I would think they're bivalves and not brachiopods because the upper and bottom halves of the shells are symmetrical and in a brachiopod they'd be asymmetrical, correct? Link to comment Share on other sites More sharing options...
Guest solius symbiosus Posted January 30, 2009 Share Posted January 30, 2009 ^^Sort of, brachiopods exhibit symmetry longitudinally(from front to back), and bivalves symmetry are along the commissure(orthogonal to longitude), or "along" the hinge. Hope you got that. Link to comment Share on other sites More sharing options...
Northern Sharks Posted January 30, 2009 Share Posted January 30, 2009 Just FYI, the rocks in Ontario are Mississipian (one small area near Chatham I believe), Devonian around your location, Silurian in a stripe from Niagara thru Hamilton and up into Lake Huron/Georgian Bay, Ordovician thru the rest of cental Ontario and Cambrian further north. Basically nothing newer than 340 million yrs, with the exception of ice-age mammals scattered around (the mammoth at the ROM was from the Niagara area). Definitely too early for insects 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...
Lauren Posted January 30, 2009 Author Share Posted January 30, 2009 Thanks I'm learning!! For some reason I didn't think they would be that old. I am still trying to get used to thinking in a geologic time scale, I haven't memorized the order of any eras past the mesozoic and I don't know where all of the epochs fit in yet, lol. e: I checked a map and my location is late silurian. Link to comment Share on other sites More sharing options...
Guest solius symbiosus Posted January 30, 2009 Share Posted January 30, 2009 If you are interested, here is a simple geologic map of Ontario. it is a 0.5meg PDF BedrockGeology_Ontario.pdf Link to comment Share on other sites More sharing options...
Lauren Posted January 30, 2009 Author Share Posted January 30, 2009 Oh okay, thanks. The map is a little weird but I think it's from the upper member of the Lindsay formation, which doesn't mean anything to me, but. Link to comment Share on other sites More sharing options...
mommabetts Posted January 30, 2009 Share Posted January 30, 2009 Cool finds. Link to comment Share on other sites More sharing options...
FossilDAWG Posted February 2, 2009 Share Posted February 2, 2009 The rounded pebbles suggest glacial erratics to me (so they could be found many miles from the site of origin), and the fossils look a lot like worn sections of Pentamerus brachiopods. They had a large internal septum that almost divides the pedicle valve in two. These are common in some of the Silurian formations in Southern Ontario, such as the Fossil Hill Formation. They don't look like anything I'm familiar with from the Lindsey. Don Link to comment Share on other sites More sharing options...
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