It’s a beauty, for sure, but a friend, Tom Guensburg, found it and did the prep.

Found some notes on this specimen…

Added a dorsal view showing the slit

Ok-I’ve submitted three views, hope they are acceptable! It’s an odd little thing…

Unfortunately, no. This is all the info that was on the label (purchased specimen)

OK….not on the label, but this specimen is probably from Black Cat Mountain Quarry, with nearest town Clarita. See https://www.amnh.org/research/paleontology/collections/fossil-invertebrate-collection/trilobite-website/trilobite-localities/oklahoma-trilobites-devonian-delights

unfortunately, this specimen has no data. certainly Dalmanites, possibly from upper Midwest (Wisc?)…sorry!

sure! asynchronously as I can

there were no data for this specimen. It is likely from SE Michigan or NW Ohio, that is, Milan, MI or Sylvania, OH, but I don’t know which….

ok! Kankakee, IL

Yep. Herkimer is the county of Lang’s quarry…..