Publication Found
- Bulletin 255--Stratigraphy and Conodont Biostratigraphy of Uppermost Carboniferous and Lower Permian from North American Midcontinent
 - by Darwin R. Boardman II , Bruce R. Wardlaw , Merlynd K. Nestell
 - 42 p., 2009, $15.00, Part A published as book and Part B published on CD accompanying book. Bulletin 255 also published online.
 - Full Version available online