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Showing results for tags 'ridged'.
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I’m not sure what this is. This little croissant shaped guy struck me as interesting as I was hunting through a pile of limestone in our new construction neighborhood in northern Bexar County, Texas. It’s in northern San Antonio. I thought it might be a shell of some sort. It’s about 4.5 to 5 inches wide and about 1.5 inches in depth. It has striations here and there and a shape that looks like a nautilus, but may just be an interesting concrete on or piece of limestone. Anyone got any ideas or answers? The ‘center’ of the ‘croissant’ has a grayish area that’s really different from the rest of it. Thanks for any ideas!!!
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Good evening everyone! Hope everyone is safe and healthy! Found this little (15mm) "ammonoid", that, to the best I can find is an example of a ridged ammonite Neoglyphioceras sp? (Unklesbay Common fossils of Missouri 1973). It was found in Pennsylvanian Winterset limestone in Kansas City. Is this a fair observation/guess? Thanks for any input! Bone