Profil taxonu
Obrázky
Autor: Alexeiev
Popis
Shell rufescent, all the radial whorls angulately carinated; with the two or three last whorls nodose; with the carina toward the last whorl disappearing more and more, with the nodes (8 to 10 on each whorl) increasing in the same sense.
According to my experience this is the most common species, which also has the greatest distribution. Generally the keels and nodes are only indistinctly emphasized as external sculpture; more seldom, however, rather strongly developed, according to which I distinguish two changes of form of this variety. (Middendorff.)
TYPE in Academy, St. Petersburg. Type locality, Arctic.
RANGE. Point Barrow, Arctic Ocean, to Bering Sea.
According to my experience this is the most common species, which also has the greatest distribution. Generally the keels and nodes are only indistinctly emphasized as external sculpture; more seldom, however, rather strongly developed, according to which I distinguish two changes of form of this variety. (Middendorff.)
TYPE in Academy, St. Petersburg. Type locality, Arctic.
RANGE. Point Barrow, Arctic Ocean, to Bering Sea.
Oldroyd, I.S. The Marine Shells of the West Coast of North America. Volume II.1.
Autor: Jan Delsing
Odkazy a literatura
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [jako Neptunea communis (Middendorff, 1848)]Datum citace: 23. listopad 2013