BenK Posted February 26, 2017 Share Posted February 26, 2017 Found this on my farm on a pond bank. Looks like a bivalve shell, but it comes to a point on one end and I can't make out a central fissure. Any help is appreciated. Ste. Genevieve county, MO. Link to comment Share on other sites More sharing options...
Ludwigia Posted February 26, 2017 Share Posted February 26, 2017 Could also be a large brachiopod. Can you tell us something about the stratigraphy? Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
BenK Posted February 26, 2017 Author Share Posted February 26, 2017 Well this is an old dug out farm pond on the top of the ridge, so was actually surprised to find it there. Most the fossils I find are bivalves and corals down in the creek and in the Ordovician and Mississippian limestone chunks and outcroppings down in the gulleys. I found about an inch long section of Crinoid nearby as well. Link to comment Share on other sites More sharing options...
BenK Posted February 26, 2017 Author Share Posted February 26, 2017 Now that I look a little more I think is it a brachiopod. Pretty big one compared to others I see. Fairly worn unfortunately but I like the color regardless. Only thing bothersome is that I can't see the fissure. Link to comment Share on other sites More sharing options...
Ludwigia Posted February 26, 2017 Share Posted February 26, 2017 What's the backside look like? Maybe that's just one valve. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
EMP Posted February 27, 2017 Share Posted February 27, 2017 Platystrophia sp.? Just throwing around some genus ideas. Link to comment Share on other sites More sharing options...
BenK Posted February 27, 2017 Author Share Posted February 27, 2017 Here's the back. You can see the shell coming together to a point in the back, just didn't fossilize all that well. Lots of crystalline like features in it too. Link to comment Share on other sites More sharing options...
Ludwigia Posted February 27, 2017 Share Posted February 27, 2017 Thanks for showing the other side. It's a brachiopod for sure, although not all that well preserved. Probably a Rhynchonelloid type. I don't think that the point is a feature, but rather a result of tumbling and weathering. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
BenK Posted February 27, 2017 Author Share Posted February 27, 2017 Thanks, kinda what I was thinking too. This was anywhere from a couple feet to 20 feet under the surface before the pond was dug out long before my time. I'm just not used to seeing this color and form/size of fossil in my area, so it was really cool to me. Link to comment Share on other sites More sharing options...
westcoast Posted February 27, 2017 Share Posted February 27, 2017 Yes. A bit battered and worn but brachiopod for sure. Link to comment Share on other sites More sharing options...
TqB Posted February 27, 2017 Share Posted February 27, 2017 If you can't see a commisure, I was just wondering if rostroconch is a possibility? Tarquin Link to comment Share on other sites More sharing options...
BenK Posted February 27, 2017 Author Share Posted February 27, 2017 I definitely cannot discern a commisure. That's why I've asked you fine experts . Link to comment Share on other sites More sharing options...
abyssunder Posted February 28, 2017 Share Posted February 28, 2017 It could be a geodized brachiopod, also, deformed and inflated by the 'geodization' process. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
BenK Posted February 28, 2017 Author Share Posted February 28, 2017 I see...interesting. It is quite heavy btw. Link to comment Share on other sites More sharing options...
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