TY  - RPRT
TI  - Preliminary analysis of conodont occurrences in Pennsylvanian strata of Ohio and Kentucky
AU  - B. R. Wardlaw
AU  - C. L. Rice
AU  - R.G. Stamm
PY  - 1993
DO  - 10.3133/ofr93312
UR  - https://pubs.usgs.gov/publication/ofr93312
ID  - ofr93312
ER  -