TY  - RPRT
TI  - Graptolite succession across the Ordovician–Silurian boundary in south-eastern Alaska
AU  - Michael Churkin
AU  - Claire Carter
AU  - George Donald Eberlein
PY  - 2022
DO  - 10.1144/gsjgs.126.1.0319
UR  - https://pubs.usgs.gov/publication/70226160
ID  - 70226160
ER  -