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
view in classification
Order
MarLIN resource Order
AskNature Order
BOLDS resource for higher-level taxa
BOLDS resource for higher-level taxa
BOLDS images II Order
BOLDS resource for species-level taxa Order
Conabio Order
EOL Group on Flickr Order
Encyclopedia of Marine Life of Britain and Ireland Resource Order
IRMNG
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Order
IABIN resource Order
IUCN Red List Order
BioLib.cz Import
BioLib.cz Import Order
Integrated Taxonomic Information System (ITIS)
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Order
Inventaire National du Patrimoine Naturel Order
MCZ resource Order
AquaMaps Resource Order
Morphbank Resource Order
NCBI Taxonomy
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Order
NMNH Invertebrate Zoology resource Order
OBIS depth range resource Order
Ocean Genome Resource- genomic DNA available Order
Paleobiology Database
view in classification
Order
Reid et al, 2012 Order
Invertebrates of the Salish Sea Order
SERPENT resource Order
Animal Diversity Web Descriptions Order
IUCN Structured Data Order
Taxonomic Hierarchy of COL-China 2012
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Order
World Register of Marine Species (WoRMS)
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Order
Wikimedia Commons Order
Wikipedia Order
Wikipedia Order
iNaturalist Images Order

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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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