MolluscaBase source details
Walker, B. (1920). Ancylus obscurus Haldeman and species referred to it. The Nautilus. 33(3): 99-103.
350091
Walker, B.
1920
<i>Ancylus obscurus</i> Haldeman and species referred to it.
The Nautilus
33(3): 99-103
Publication
Ferrissia (Laevapex) dalli B. Walker, 1920 accepted as Laevapex fuscus (C. B. Adams, 1840) (original description)
Ferrissia (Laevapex) obscura (Haldeman, 1844) accepted as Laevapex fuscus (C. B. Adams, 1840) (additional source)
Ferrissia (Laevapex) obscura (Haldeman, 1844) accepted as Laevapex fuscus (C. B. Adams, 1840) (additional source)
