(c) Hagadorn, J. W., and Belt, E. S., 2008, Stranded in upstate New York: Cambrian scyophmedusae from the Potsdam Sandstone: Palaios, v. 23, n. 7, p. 424-441.
(d) Belt, E. S., Heckel, P. H., Lentz, L. J., Bragonier, W. H., and Lyons, T. W., 2011: Record of glacial–eustatic sea-level fluctuations in complex middle to late Pennsylvanian facies in the Northern Appalachian Basin and relation to similar events in the Midcontinent basin. Sedimentary Geology, v. 238, 79-100.
The online file with tracking references is <http://dx.doi.org/10.1016/j.sedgeo.2011.04.004>
Aggie, Em, Ed, Kilty, Emily, Jr., Anne at June 2002 retirement
Turner's Falls student project section, April 2002. Photo by Steve Sauter.