MolluscaBase source details
Johnson, C. W. (1915). Helix hortensis from a Maine shell heap. The Nautilus. 28(11): 131.
418558
Johnson, C. W.
1915
<i>Helix hortensis</i> from a Maine shell heap
The Nautilus
28(11): 131
Publication
It is now estimated that "Mustela macrodon" became extinct as late as 1894
Date
action
by
Helix hortensis O. F. Müller, 1774 accepted as Cepaea hortensis (O. F. Müller, 1774) (additional source)