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Lunatia heros is a predatory snail that drilled holes in other mollusks' shells to eat the contents. One often finds hole that they left behind in the surrounding fossil shells. The shells of L. heros are variable, having more or less extended spirals, more or less globoular shape, etc. This specimen was donated to the Delaware Museum of Natural History.
Donated to the Delaware Museum of Natural History. According to L.W. Ward, 1998 ( Full Reference : L. W. Ward. 1998. Mollusks from the Lower Miocene Pollack Farm Site, Kenty County, Delaware: A preliminary analysis. Geology and paleontology of the lower Miocene Pollack Farm Fossil Site, Delaware [A. Miller/A. Hendy/A. Hendy] ) , the Genus was re-assigned from Fissuridae to Diodora.
This specimen and dozens like it were collected from matrix material deposited in the waters of the Chesapeake Bay by a landslide. It is one of only a few species that consistently survived intact in the matrix samples I collected. These are also common finds loose on the beach. This specimen was donated to the Delaware Museum of Natural History.