Nodilittorina
Encyclopedia
Nodilittorina is a genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of small sea snail
Sea snail
Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....

s, marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod mollusks in the family Littorinidae
Littorinidae
Littorinidae is a taxonomic family of over 200 species of sea snails, marine gastropod molluscs in the clade Littorinimorpha, commonly known as periwinkles and found world-wide.-Names:...

, the winkles or periwinkles.

Many species that were previously placed in this genus have been moved to the genus Echinolittorina
Echinolittorina
Echinolittorina is a genus of small sea snails, marine gastropod molluscs in the family Littorinidae, the winkles.- Species :According to the World Register of Marine Species , the following species with valid names are included within the genus Echinolittorina : * Echinolittorina albicarinata *...

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