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
Hyperoodontidae Gray, 1846 Preferred
Ziphiidae Gray, 1850 Other, see comments
Ziphiidae Gray, 1865
Hyperoodontina Gray, 1846

World Register of Marine Species (WoRMS)

Name Relationship
Ziphiidae Gray, 1850 Preferred
Paikea Oliver 1922 Synonym
Dolichodon Gray, 1866
Epiodon Burmeister, 1867
Anarnacinae Gill 1871
Ananarcinae Gill, 1871
Anodon Wagler 1830
Berardus Gray 1863
Callidon Gray 1871
Cetodiodon Jacob, 1825
Chaenocetus Eschricht, 1846
Chaenodelphinus Eschricht, 1843
Chenocetus Gray, 1846
Chenodelphinus Duvernoy, 1851
Diodon Lesson 1828
Dioplodon Gervais, 1855
Diplodon Gray, 1866
Frasercetus Moore 1968
Hyperadon J. A. Allen, 1869
Hyperdordon Gray, 1821
Hyperodon Cope, 1865
Hyperondon Hall & Kelson, 1959
Hyprodon Duméril, 1806
Lagenocetus Gray 1863
Lagocetus Gray, 1866
Mesiodon Gray 1866
Mesodiodon Duvernoy 1851
Micropteron Eschricht 1849
Neoziphius Gray 1871
Nodus Wagler 1830
Oulodon von Haast 1876
Petrorhynchus Gray 1865
Uperoodon Gray 1843
Uranodon Illiger 1811
Ziphiorrhynchus Burmeister 1865
Zyphius Moreno, 1895
Aliama Gray 1864
Aodon Lesson 1828
Heterodon Blainville, in Demarest, 1817
Micropterus Wagner, 1846

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