1. Subfossil Leaves from Lancaster County, Pennsylvania Reveal a New Upland Floral Component of the Pre-European Piedmont Landscape. Open Access Author: Elliott, Sara Jean Title: Subfossil Leaves from Lancaster County, Pennsylvania Reveal a New Upland Floral Component of the Pre-European Piedmont Landscape. Graduate Program: Geosciences Keywords: Plant MacrofossilsPiedmontStream RestorationPaleontologyPaleoecology File: Download Elliott.S_MSThesis_8.6.12.pdf Committee Members: Peter Daniel Wilf, Thesis Advisor/Co-Advisor