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Hello everyone! I'm new here and new to fossil everything and learning as much as I can. I may have found my first trilobite and I have ideas of what it could be but not good at all with the process of identification or how it is oriented on/in the matrix. There are faint lines around the entire piece that seems to be other trilobites/parts. Any help would be appreciated! Thanks for looking! Please excuse any mistakes this is also my first time ever posting on a forum.

Just putting away my trilobite finds for the winter and decided to try to place a name with a face to a few, well a dozen , of my unknowns. Most of these were found in SW Wisconsin in the Mifflin of the Platteville Formation, Ordovician. It seems very difficult to ID trilobites when they present themselves as partials. These are not beautiful specimens, but knowing their ID can help me with future hunts. Thanks for any help. 1. Are these Thaleops or Illaenus cephalons? I can not figure out how to differentiate. 2. Is this a pygidium? If so, it is quite large. Any thoughts on how to label this? 3. What is the ID for the two partial cephalons with what looks like an eye on each one? 4. Is this a hypostome from Basiliella barrandi? 5. Can't place these pygidiums . Kinda isotoleus but kind of bumastus. Actually I have no idea!!! These actually came from the Maquoketa, not Platteville.