Images for this post are microfossils from Washington County, Indiana that exist in the Salem Limestone. This first fossil is worm called Spirorbis annulatus. The drawing below is of one from Indiana Department of Geology and Natural Resources 13th Annual Report by W.S. Blatchley, 1905. Can be found on Google Books HERE.
This next fossil is what Salem Limestone is famous for... the foraminifera. This one is called Endothyra baileyi (at least in the 1905 Indiana Geology Report). This first image is of a set of drawings from that report.
This next picture is one I took at 60x magnification. I have found maybe 30 so far after looking about a measuring cup worth of sand material.
These next set of 1905 drawings are the gastropod Solenospira vermicula, S. turritella, and S. attenuata.
This last image is of an elliptical crinoid stem piece that reminds me of a Platycrinites. I found 3 so far.
Thanks to Herb for the Salem Limestone sand to study.