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Showing results for tags 'silica fm'.
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I've been finding some interesting clam fragments at Paulding, Ohio (Silica Fm., Middle Devonian) with original shell and a conspicuous sharp angle along the dorsal side of the shells. They are coming from the limestone layers of the formation (not the shale). Finally, I got one complete enough that I might be able to get an ID. It's about 3/4 complete, but unfortunately it's missing the anterior end, including the umbo. I've tried to illustrate the shape via some photos with reconstructions (red line) of what's missing. It's hard to illustrate the 3D qualities with photos. I'm thinking this is Mytilarca cordata. Looking for confirmation from those familiar with clams of Silica Formation or other Devonian formations of same age. The shell (what remains of it) is about 6cm in length. @crinus
First trip of the year today to the "Fossil Gardens" at Paulding, Ohio. This is quarry spoil of mid-Devonian age, Silica Formation. There was not a cloud in the sky, and temps were relatively warm at 43 deg. F. I was the only one there for most of the day, and it was extremely peaceful. What a great day. Here are pics of some of the finds. These are "farm fresh" and haven't even been washed yet, but I did take time to polish some horn corals and get some acetate peels (couldn't wait). A large Cystiphylloides rugose coral.