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
NMNH Invertebrate Zoology resource Genus
Global Biotic Interactions Genus Import Import Genus
Integrated Taxonomic Information System (ITIS)
view in classification
Moorea Biocode
  • Polyophthalmus
NCBI Taxonomy
view in classification
GBIF national node type records: Germany Genus
OBIS Environmental Information
  • Polyophthalmus Quatrefages, 1850
OBIS depth range resource Genus
Ocean Genome Resource- genomic DNA available
Ocean Genome Resource- genomic DNA available Genus
Smithsonian type specimen data Genus
GBIF national node classification resource: Germany Genus
World Register of Marine Species (WoRMS)
view in classification
polytraits Genus


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