Image: Clappia umbilicata shell 2
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Description: Drawing of apertural view of the shell and its operculum of Clappia umbilicata, synonym Clappia clappi from Duncan's Riffle, Coosa River, Alabama.
Title: Clappia umbilicata shell 2
Credit: Walker B. (1909). "New Amnicolidae from Alabama". The Nautilus 22(9): 85-90. Plate 6, figure 1 and 4. Background retouched.
Author: Bryant Walker
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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