TY - RPRT TI - Iapetonudus (N. gen.) and Iapetognathus Landing, unusual Earliest Ordovician multielement conodont taxa and their utility for biostratigraphy AU - R.S. Nicoll AU - J.F. Miller AU - G.S. Nowlan AU - J.E. Repetski AU - Raymond L. Ethington PY - 1999 UR - https://pubs.usgs.gov/publication/70021592 ID - 70021592 ER -