title: Middle pennsylvanian plant fossils: problematic occurrence in the bronx.
abstract: A possible glacial boulder of undeformed and unmetamorphosed siltstone containing Middle Pennsylvanian plant fossils was recovered from the Bronx. The rock cannot be explained by known geologic relations and suggests the possibility of undetected outliers of Pennsylvanian rocks in the Hudson valley.
authors.forename: E A
authors.initials: EA
authors.lastname: Zen
authors.forename: S H
authors.initials: SH
authors.lastname: Mamay