Profil taxonu
Obrázky
Autor: Jan Delsing
Autor: Oldroyd, I.S.
Rictaxis punctocaelatus vancouverensis
Autor: Oldroyd, I.S.
Autor: Dall, W.H.
Popis
Acteon punctocoelata: Shell oblong with conoidal spire; white with two broad ashy or brown zones. Whorls 5, convex, separated by impressed and narrowly channeled sutures. Surface sculptured throughout with spiral equidistant conspicuously punctate grooves, the raised intervals smooth except for a fine engraved live along the middle of each. Grooves on the body-whorl about 26. Aperture two-fifths to two-thirds the length of the shell. Columella having a spiral fold above, obliquely truncated at base.
Source: Tryon and Pilsbry, Manual of Conchology
Velikost
Acteon punctocoelata: 10 - 20 mm
Rozšíření
Acteon punctocoelata: Monterey, California, to Magdalena Bay, Lower California.
Fossil : Pleistocene, Santa Barbara, to San Diego, California.
Fossil : Pleistocene, Santa Barbara, to San Diego, California.
Zajímavosti
Acteon punctocoelata: TYPE in United States National Museum. Type locality, Santa Cruz, California.
This species was described as Tornatella punctocoelata by Carpenter.
This species was described as Tornatella punctocoelata by Carpenter.
Autor: Jan Delsing
Odkazy a literatura
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [jako Rictaxis punctocaelatus (Carpenter, 1864)]Datum citace: 22. listopad 2013