TY  - JOUR
A1  - Thein M.L., Nitecki M.H.
JO  - Fieldiana Geology
SP  - 1
EP  - 238
C1  - 34: 1-238
TI  - Chesterian (Upper Mississipian) Gastropoda of the Illinois Basin
UR  - https://molluscabase.org/aphia.php?p=sourcedetails&id=421085
VL  - 34
PY  - 1974
Y2  - 2026-06-15
ER  -