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Showing results for tags 'Early-Middle Mississippian'.
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Hey all, thought I would share some photos with you and get a few questions out. A while back I found a peice of gravel in my driveway that comes from a mine in my area. One of the few underground limestone mines in Iowa, Ames Mine (Martin-Marietta). See the topic tags for the type of limestone it most likely is. Anyhow, most of it is pretty devoid of any fossils, its a gray (mostly oolitic) limestone, some of it dark gray, some of it light. This peice of gravel popped out of the mix, its as far as I can tell a aquatic snail. The outside was beat up so I decided to take it to a grinder and flatten it to bring out the spiral in it. The front gave a pretty nice spiral, and I went to do the back of it, and apparently it got squashed pretty flat. A crinoid stem is there and under the microscope I found some pretty interesting tiny fossils. The square one seems to be a blue green alga, and a very tiny gasropod in the next. I know that flattening the snail itself ruins all posibility of identification, but I'd have never seen the small ones if I hadn't. Any ideas? Note: the circle of the microscopic images is 2mm. The whole thing is at longest 3cm. Thanks in advance, you guys rock. Pun intended.
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- Early-Middle Mississippian
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