The genus Edmondia was first described by de Koninck in 1841. The book is Description des animaux fossiles qui se trouvent dans le terrain carbonifére de Belgique, written in the French language. The genus occurs from 252.3 to 457.5 million years ago. It died out during the Permian–Triassic extinction event.
The fossil Amphiscapha appears readily within shale locally. Buried at an angle different from the plane the shale sheared from, this specimen is a bit unique. Only the raised rim was visible initially. Using precision tweezers, I utilized the sharp metal ends and a microscope to slowly reveal the rest
Amphiscapha is a common fossil in Parks Township. It appears often as a flat spiral within shale. This particular specimen was accompanied by two Meekospira. I used a pair of engineering tweezers to remove some matrix from the sides of the larger of the two Meekospira. First described in 1942
Closely related to modern horsetails, Calamites is an extinct genus that existed from the Carboniferous until the early Permian. Horsetails are one of several genera considered to be living fossils. They reproduce using spores, which were similar to Lepidodendron. Both Lepidodendron and Calamites produced cone arrangements of spores. This genus
Crinoid columnal fossils are very common in my digging locale. After finding a mollusc in the shale/limestone boundary above the limestone layer within the mid level shale pit, I noticed a tiny deep slot in the rock matrix. For whatever reason, the original crinoid had eroded away and only the
This specimen is probably Wilkingia. But it could also be Phestia. I compared photos from a quick web search of each and I found examples of Wilkingia to be far more comparable. Wilkingia lived from the Carboniferous until the Permian periods of time. This particular specimen is from eroded matrix,