I’ve got 4 fossils, or steinkerns, I’m needing help identifying, all on the same rock. Found in a creek bed in Boone County, MO. I believe it to be from the Mississippian Era. I believe those labeled one and two are Bryozoan Archimedes. Number one (the biggest of the two) measures at a little over 1/4th of an inch. Number two measures at almost exactly (slightly over) 1/4th of an inch. Number three I’m thinking is part of a stem of a Crinoid? Can anyone confirm or deny this for me? The fourth is, what I believe to be, a steinkern of a possible tooth? Like, a tooth laid there at one point, and the impression was left behind? It measures at exactly 1/2 inch. (Due to file restrictions on pix, I will upload some pix in the comments.)