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.

Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Species 2000 & ITIS Catalogue of Life: April 2013
view in classification
Life History Characteristics of Placental Non-Volant Mammals-to be deleted- Species
Animal Diversity Web Descriptions
AquaMaps Resource
Arctic Ocean Biodiversity 2011
  • Erignathus barbatus
Arctic mammals
BOLDS images II Species
BOLDS resource for species-level taxa
Biome & Ecoregion Resource Species
  • Erignathus barbatus
DiscoverLife ID keys resource
  • Erignathus barbatus
DiscoverLife map resource
  • Erignathus barbatus
Freshwater and Marine Image Bank, University Libraries, U Washington
Global Biotic Interactions Species
IUCN Red List
IUCN Red List
view in classification Import
Integrated Taxonomic Information System (ITIS)
view in classification
Inventaire National du Patrimoine Naturel Species
Life History Characteristics of Placental Non-Volant Mammals Species
  • Erignathus barbatus
Anage Data
Macroecological database of mammalian body mass-to be deleted- Species
Macroecological database of mammalian body mass Species
  • Erignathus barbatus
Mammal life history
Taxonomic Hierarchy of COL-China 2012 Mammalia
MarLIN resource
Milk Chemical Data Species
NCBI Taxonomy
view in classification
NatureServe resource Species
North American Mammals Resource
OBIS Environmental Information
  • Erignathus barbatus (Erxleben, 1777)
OBIS depth range resource
Paleobiology Database
view in classification
SPIRE resource
  • Erignathus barbatus
Social systems of mammalian species-to be deleted- Species
Social systems of mammals Species
  • Erignathus barbatus
AnAge database
IUCN Structured Data outlinks
Taxonomic Hierarchy of COL-China 2012
view in classification
Wikimedia Commons


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