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.

FishBase

Name Relationship
Somniosus microcephalus (Bloch and Schneider, 1801) Preferred
Leiodon echinatum Wood, 1846 Synonym
Scymnus glacialis Faber, 1829
Scymnus gunneri Thienemann, 1828
Scymnus micropterus Valenciennes, 1832
Somniosus antarcticus (non Whitley, 1939) Misapplied name
Somniosus brevipinna Lesueur, 1818
Squalus borealis Scoresby, 1820
Squalus carcharias (non Linnaeus, 1758)
Squalus microcephalus Bloch and Schneider, 1801
Squalus norvegianus Blainville, 1825
Squalus squatina (non Linnaeus, 1758)

NCBI Taxonomy

Name Relationship
Somniosus microcephalus Preferred
Somniosus microcephalus (Bloch and Schneider, 1801) Authority

Species 2000 & ITIS Catalogue of Life: April 2013

Name Relationship
Somniosus microcephalus (Bloch and Schneider, 1801) Preferred
Somniosus brevipinna Lesueur, 1818
Squalus carcharias (non Linnaeus, 1758)
Squalus borealis Scoresby, 1820
Squalus microcephalus Bloch and Schneider, 1801
Leiodon echinatum Wood, 1846
Scymnus glacialis Faber, 1829
Scymnus micropterus Valenciennes, 1832
Somniosus antarcticus (non Whitley, 1939)
Squalus norvegianus Blainville, 1825
Scymnus gunneri Thienemann, 1828
Squalus squatina (non Linnaeus, 1758)

Integrated Taxonomic Information System (ITIS)

Name Relationship
Somniosus microcephalus (Bloch and Schneider, 1801) Preferred
Squalus microcephalus Bloch and Schneider, 1801 Original name/combination

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