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
Species Import
DiscoverLife ID keys resource
  • Cyclopsetta querna
DiscoverLife map resource
  • Cyclopsetta querna
view in classification
view in classification
FishWisePro resource
Fishes resource
IUCN Red List
BOLDS resource for species-level taxa
Integrated Taxonomic Information System (ITIS)
view in classification
NCBI Taxonomy
view in classification
OBIS Environmental Information
  • Cyclopsetta querna (Jordan and Bollman, 1890)
OBIS depth range resource
STRI Neotropical Fishes
STRI Neotropical fish distribution maps
Smithsonian type specimen data
AquaMaps Resource
IUCN Structured Data


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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