Jun 17, 2024 · Both limestone/chert and same area, not but yards away probably on a different day. Fayette County Iowa. I have a couple fossils and I can't figure it out. Probably just …

Jan 31, 2020 · My grandson and I found this chunk of fossiliferous limestone in our yard today and I cleaned it with vinegar, but it is very crumbly. I can tell that it contains mostly fenestellan …

Jan 15, 2020 · I think I have completed my first full cleaning of a fossiliferous limestone rock. I will post a series of macro photos of the rock here and would welcome input. I am new at this (like …

Apr 7, 2022 · Moderately indurated, chalky, yellow grey, fossiliferous limestone in a St. Augustine parking lot, very likely was extracted from the Eocene, Ocala Limestone west of St Augustine, …

Feb 27, 2024 · I have a nice piece of limestone shale with some gomphoceras fossils on it. It was apparently on the surface and there are portions with unsightly white deposits that are …

Nov 26, 2021 · These come from limestone quarries in central Iowa, near Springville, which appear as crushed gravel for roadbeds. My sister picks these up on her walks and wonders if …

Dec 19, 2014 · Why are you "trying to extract the bones quickly!"? As a rule, quickly dissolving the limestone will require a strong or concentrated acid, which will etch the fossils. All the fine …

Dec 8, 2023 · I found this case of silicified fossils from the Permian Glass Mountain, Texas area that was sold at a local Phoenix thrift store. It looks like a museum display that was placed …

Feb 25, 2025 · Hello, I am hoping someone can tell me a bit about this specimen. I found it last year in my usual location which Is Montana. Specifically near Yellowstone county. It has …

Feb 10, 2020 · Marl is a type of rock similar to limestone, but having a more muddy and massive character. It can sometimes be very fossiliferous (or have abundant fossils), sometimes …