TY  - RPRT
TI  - The conodont Iapetognathus and its value for defining the base of the Ordovician System
AU  - J. E. Miller
AU  - John E. Repetski
AU  - R. S. Nicoll
AU  - G. S. Nowlan
AU  - R. L. Ethington
PY  - 2014
DO  - 10.1080/11035897.2013.862851
UR  - https://pubs.usgs.gov/publication/70156838
ID  - 70156838
ER  -