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Spherical without siphonal groove

Periwinkles

Picture informations: Periwinkles
Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-sa 3.0
Columella centally closed (without umbilicus)  

Top snails

Picture informations: Top snails
Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-sa 3.0
Round hole (umbilicus) below, shell cone-shaped  

Moon snails

Picture informations: Moon snails
Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-sa 3.0
Round hole (umbilicus) below, shell globular  

Chink shells

Picture informations: Chink shells
Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-sa 3.0
Umbilicus slit-shaped, shell globular  

Purple sea snail

Picture informations: Purple sea snail
Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-sa 3.0
Purple sea snail  

Sumpfdeckelschnecken

Picture informations: Sumpfdeckelschnecken
Author(s) Rainer Borcherding
Licence owner Schutzstation Wattenmeer
Licence statement Copyrighted Material; the copyright remains with the author (not this web publication)
Licence cc-by-sa 3.0
Umgänge stark abgesetzt, dünnschalig, längsstreifig