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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
Species 2000 & ITIS Catalogue of Life: April 2013
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Species
Integrated Taxonomic Information System (ITIS)
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Species
DiscoverLife map resource
  • Vipera aspis
EOL Group on Flickr
EOL Group on Flickr
EOL Group on Flickr
Environments
Genome 10K Project Vertebrates
  • Vipera aspis
IUCN Red List
IUCN Red List
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BioLib.cz Import
Anage Data
Inventaire National du Patrimoine Naturel Species
Inventaire National du Patrimoine Naturel Species
Inventaire National du Patrimoine Naturel Species
NCBI Taxonomy
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Species
AnAge database
IUCN Structured Data
TaxonConcept.org outlinks
  • Vipera aspis
The Reptile Database
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Wikimedia Commons
Wikipedia
iNaturalist Images Species

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