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.

Species 2000 & ITIS Catalogue of Life: April 2013

Name Relationship
Octopus vulgaris Cuvier, 1797 Preferred
Octopus tuberculatus Targioni-Tozzetti, 1869 Synonym
Octopus brevitentaculatus Blainville, 1826
Octopus americanus Montfort, 1802
Octopus albus Rafinesque, 1814
Octopus niger Rafinesque, 1814
Octopus octopodia Tryon, 1879
Octopus heteropus Rafinesque, 1814
Octopus moschatus Rafinesque, 1814
Octopus sinensis d'Orbigny, 1834
Octopus bitentaculatus Risso, 1854
Octopus tritentaculatus Risso, 1854
Octopus ruber Rafinesque, 1814
Octopus pilosus Risso, 1826
Octopus rabassin Risso, 1854
Octopus tetradynamus Rafinesque, 1814
Octopus troscheli Targioni-Tozzetti, 1869
Octopus maculatus Rafinesque, 1814
Octopus cassiopeia Gray, 1849
Octopus coerulescentes Fra Piero, 1895

Integrated Taxonomic Information System (ITIS)

Name Relationship
Octopus vulgaris Cuvier, 1797 Preferred
Octopus vulgaris americanus D'Orbigny, 1842 In R. de la Sagra, 1838-1857 Junior synonym
Octopus rugosus (Bosc, 1792)
Octopus vulgare Cuvier, 1797 Original name/combination
Octopus brevitentaculatus Blainville, 1826
Octopus cassiopeia Gray, 1849
Octopus coerulescentes Arbanasich, 1895
Sepia granulata Bosc, 1792
Octopus granulatus Lamarck, 1798
Octopus incertus Targioni-Tozzetti, 1869
Sepia rugosa Bosc, 1792
Octopus niger Risso, 1854
Octopus troscheli Targioni-Tozzetti, 1869
Octopus tuberculatus Blainville, 1826
Octopus tuberculatus Risso, 1826
Octopus ruber Rafinesque, 1814
Octopus tetradynamus Rafinesque, 1814

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