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Home > Explore! > Surficial Geology > Field Localities > Presumpscot Formation 2 > Figure 4c



Figure 4c. Whelk (Neptunia despecta tornata) on left with steamer clams (Mya arenaria) from section. Note clams still have the periostracum, the brown-colored membrane on the outer side of the shell.


Last updated on October 6, 2005