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
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Order
Integrated Taxonomic Information System (ITIS)
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Subclass
Paleobiology Database
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Subclass
NCBI Taxonomy
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Subclass
Taxonomic Hierarchy of COL-China 2012
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Order
World Register of Marine Species (WoRMS)
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Order

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