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
NCBI Taxonomy
view in classification
BOLDS resource for species-level taxa Genus
Freshwater and Marine Image Bank, University Libraries, U Washington
Global Biotic Interactions Genus
Herring, 1987
IUCN Red List Genus Import Genus Import
Initial Tree of Life web Import
  • Taonius
Integrated Taxonomic Information System (ITIS)
view in classification
BOLDS images II Genus
NMNH Invertebrate Zoology resource Genus
OBIS Environmental Information
  • Taonius Steenstrup, 1861
OBIS Environmental Information
  • Desmoteuthis Verrill 1881
OBIS depth range resource
  • Desmoteuthis
OBIS depth range resource Genus
Smithsonian type specimen data Genus
BOLDS resource for higher-level taxa Genus
Tree of Life web project
  • Taonius Steenstrup, 1861
Wikimedia Commons Genus
Wikipedia Genus


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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