18 jul 2012
A short article from Donald M. Hoskins about Pennsylvania fossils...
Download:
Sources:
Hoskins, D. M., 1999, Common fossils of Pennsylvania (2nd
ed.): Pennsylvania Geological Survey, 4th ser., Educational
Series 2, 19 p.
Pennsylvania web site: www.state.pa.us
Department of Conservation and Natural Resources
web site: www.dcnr.state.pa.us
Bureau of Topographic and Geologic Survey
web site: www.dcnr.state.pa.us/topogeo
