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After making a stop at the Anna Roadcut, I drove about 15 minutes to Vienna, Illinois where there is a roadcut at the entrance to Interstate 24. This rock is supposed to Be Mississippian Menard Limestone. At this location I also found some nice hash plates, my biggest blastoid of the day, Horn coral, Archimedes’ screw, bryozoan and brachiopods.
Today I was in Southern Illinois and made a Quick stop at a road cut near Anna, Illinois, just off of Interstate 57. This exposure is: Upper Mississippian Middle Chesterian Series Golconda Formation Harvey Member I found a few nice hash plates and some blastoids, Archimedes’ screw, brachiopods, Horn coral, Bryozoan, crinoid stems and one trilobite pygidium.