 The prefixes she came up with are meta, epi, and apo.Florence presented a second notable new conclusion regarding the cycles of erosion within Pennsylvania; earlier scientific thought was that the Piedmont province of Pennsylvania was made by two to three erosion cycles, while she had evidence there were at least nine cycles.Florence found this by compiling a stratigraphic record of Atlantic deposit in the province, listing the depth, unconformities, and different grain sizes (like sand, clay, or gravel).