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Littorinidae
PERIWINKLES
Lacunidae

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Littorina fabalis
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Littorina fabalis
Littorina fabalis
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Littorina fabalis

Littorina fabalis
© Copyright Malcolm Storey 2011-2118 · 3
Littorina fabalis
Littorina fabalis
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Littorina fabalis

Littorina fabalis
© Copyright Malcolm Storey 2011-2118 · 3
Littorina fabalis
Littorina fabalis
© Copyright Malcolm Storey 2011-2118 · 3
Littorina fabalis

Littorina fabalis
© Copyright Malcolm Storey 2011-2118 · 3
Littorina fabalis
Littorina fabalis
© Copyright Malcolm Storey 2011-2118 · 3
Littorina fabalis

Littorina fabalis
© Copyright Malcolm Storey 2011-2118 · 3
Littorina fabalis
Littorina fabalis
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Littorina fabalis

Littorina fabalis
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Littorina fabalis
Littorina saxatilis agg.
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Littorina saxatilis agg.

Littorina saxatilis
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Littorina saxatilis
Littorina saxatilis
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Littorina saxatilis
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Following served from Littorina scabra, John B. Burch, University of Michigan Animal Diversity Web
   
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Following modified from Washington State University
   
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Archerd Shell Collection > Shell Classes > Gastropoda > Littorinidae


Family: Littorinidae (Periwinkles)


Description

Periwinkles have solidly built shells with typically sharp round protuberances. The outer lip of the shell is sharp-edged and thin, while the mollusc has a horny operculum. The species shown here is larger than many (4 cm.) and was found in Japan. They are found in intertidal locations widely distributed in most parts of the world, and often in swarms on harbor walls and other rocky surfaces. Some, however, live in mangroves.

The range of conditions in which periwinkles live can be surprising. Some, like Nodilittorina pyramidalis , have adapted to harsh dry, hot conditions which occur in places that may be wet only once or twice a month during the highest of the high tides

Interestingly, several families in the superfamily, Littorinoidea, have further adapted to heavily muddy water by developing the capacity to breath air directly (see, e.g., Pulmonate snails).

Classification  

Class: Gastropoda
Clade: Littorinimorpha
Superfamily: Littorinoidea
Family: Littorinidae
 
Major Genera  
  • Genus: Cremnoconchus
  • Genus: Echininus
  • Genus: Haloconcha
  • Genus: Littorina
  • Genus: Nodilittorina
  • Genus: Peasiella
  • Genus: Tectarius


Tectarius pagodus (Linnaeus, 1758)
Pagoda Prickly-Winkle


Archerd Shell Collection > Shell Classes > Gastropoda > Periwinkles

Following modified from University of Michigan Animal Diversity Web
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Updated: 2018-10-17 01:48:51 gmt
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