Ganis, G. R., Williams, S. H., et al. 2001. New biostratigraphic information from the western part of the Hamburg klippe, Pennsylvania, and its significance for interpreting the depositional and tectonic history of the klippe. 113 (1): figs. 1-10.
Place:
Dauphin County, Pennsylvania, United States, North America
Geologic Age:
Paleozoic - Ordovician
Record Last Modified:
17 Oct 2024
Stratigraphy:
Martinsburg Sh
Taxonomy:
Animalia Hemichordata Graptolithina
Published Name:
Didymograptus (Expansograptus) abditus Williams & Stevens