Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once. Such duplicates are listed under synonyms. EOL also provides support for common names which may vary across regions as well as languages.

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Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Integrated Taxonomic Information System (ITIS)
view in classification
Freshwater and Marine Image Bank, University Libraries, U Washington
BioImages resource Species
  • Helix pomatia
DiscoverLife map resource
  • Helix pomatia
EOL Group on Flickr
EOL Group on Flickr
EOL Group on Flickr
view in classification
BOLDS resource for species-level taxa
IUCN Red List Import
Animal Diversity Web Descriptions
Inventaire National du Patrimoine Naturel Species
NCBI Taxonomy
view in classification
NatureServe resource Species
IUCN Structured Data
Wikimedia Commons
iNaturalist Images Species
iSpot links Species
  • Helix (Helix) pomatia


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

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