Shamalama Posted June 10, 2009 Share Posted June 10, 2009 I'm working on being able to ID the many shells from the Ordovician around Cincinnati and central Kentucky. Today I grabbed a bunch of Platystrophia, which is ubiquitous to the region, and I was able to ID most of them but two are frustrating me. Any help is appreciated verifying my IDs and suggesting what the unknowns are. Pic of the dorsal (bottom) valves of eight similar looking shells, I've labeled the ones I think I know. Pic of the ventral (top) valves of eight similar looking shells, I've labeled the ones I think I know. P. acultilirata P. cypha P. laticosta P. ponderosa another, smaller P. ponderosa? Unknown Platystrophias Lepidocyclus (not the same species but looks similar and can be confusing) -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
Guest solius symbiosus Posted June 10, 2009 Share Posted June 10, 2009 The one on the top right looks like an Orthorynchulla sp. The other I have seen, and have it in some literature somewhere. I'll look for it later. Link to comment Share on other sites More sharing options...
mommabetts Posted June 11, 2009 Share Posted June 11, 2009 Can't help with the ID, but they are very nice. Link to comment Share on other sites More sharing options...
Shamalama Posted June 11, 2009 Author Share Posted June 11, 2009 The one on the top right looks like an Orthorynchulla sp. The other I have seen, and have it in some literature somewhere. I'll look for it later. See, I was thinking the top right shell might be P. hopensis based on the pics from the Dry Dredgers site. -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
Terry Dactyll Posted June 11, 2009 Share Posted June 11, 2009 Shamalama..... Beautiful 'crisp' examples...... very nice collection.... well done..... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
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