Sometimes taxonomists create new names for groups that already have a name. They may do this because they are unaware of the original name, or they may think the organism before them belongs to a different group when in fact it does not. If two or more names are found to apply to the same group, they are considered synonyms. In most cases, the first name takes priority and is considered to be the valid or accepted name. However, there can be exceptions, and it's not always easy to determine which of a series of synonyms should be considered valid or accepted. Here we list the synonyms provided to EOL by our classification partners. We also include other versions of the name that most likely refer to the same group, for example, misspellings in the literature or different variations of the authorship associated with the name.

Preferred marks the preferred name from each source.

Integrated Taxonomic Information System (ITIS)

Name Relationship
Cirroteuthis Eschricht, 1836 Preferred
Sciadephorus Reinhardt and Prosch, 1846 Junior synonym
Epulo Gistel, 1848
Bostrychoteuthis Agassiz, 1846

World Register of Marine Species (WoRMS)

Name Relationship
Cirroteuthis Eschricht 1838 Preferred
Cirroteuthis grimaldii Joubin, 1903 Synonym
Cirroteuthis umbellata Fischer, 1884
Cirroteuthis mulleri
Cirroteuthis hoylei Robson, 1932
Cirroteuthis magna Hoyle, 1885
Cirroteuthis glacialis Robson, 1930
Cirroteuthis macrope Berry, 1911
Cirroteuthis caudani Joubin, 1896
Cirroteuthis meangensis Lo Bianco, 1903
Cirroteuthis megaptera Verrill, 1885


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