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
BioLib.cz Import
Anage Data
Animal Diversity Web Descriptions
BHL: BioDivLibrary's photostream
BOLDS images II Species
BOLDS resource for species-level taxa
Biopix
DiscoverLife map resource
  • Lutra lutra
EOL Group on Flickr
EOL Group on Flickr
  • Lutra lutra
Environments
GBIF Elevation Data Species
Genome 10K Project Vertebrates
  • Lutra lutra
Global Biotic Interactions Species
IUCN Red List
IUCN Red List
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AnAge database
Integrated Taxonomic Information System (ITIS)
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Species
Inventaire National du Patrimoine Naturel Species
Mammal life history
Taxonomic Hierarchy of COL-China 2012 Mammalia
NCBI Taxonomy
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Species
OBIS Environmental Information
  • Lutra lutra (Linnaeus, 1758)
Paleobiology Database
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Species
SPIRE resource
  • Lutra lutra
Monthly ARKive text import
IUCN Structured Data
TaxonConcept.org outlinks
  • Lutra lutra
Taxonomic Hierarchy of COL-China 2012
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Species
World Register of Marine Species (WoRMS)
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Species
Wikimedia Commons
Wikipedia
iNaturalist Images Species
iSpot links Species
  • Lutra lutra

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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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