Review of late middle Ordovician graptolites in eastern New York and Pennsylvania

• 1 October 1970
• journal article
• review article
• Published by American Journal of Science (AJS) in American Journal of Science
• Vol. 269  (3) , 304-313
• https://doi.org/10.2475/ajs.269.3.304

Abstract

Keywords

• LATE MIDDLE
• EASTERN NEW
• ORDOVICIAN GRAPTOLITES
• MIDDLE ORDOVICIAN
• YORK
• PENNSYLVANIA
• REVIEW OF LATE