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.

NCBI Taxonomy

Name Relationship
Bivalvia Preferred
Lamellibranchiata Synonym
Pelecypoda

Integrated Taxonomic Information System (ITIS)

Name Relationship
Bivalvia Linnaeus, 1758 Preferred
Pelecypoda Goldfuss, 1920 Junior synonym

IRMNG

Name Relationship
Bivalvia Preferred
Pachidomella Cossmann 1911
Pleurecterites Bronn 1843
Autonoë Gray 1852
Telestrophis Agassiz 1846
Saxicavidae Swainson 1835
Pholeobiidae Leach, 1852
Panopeidae Bronn, 1862
Rocellariidae Ridewood, 1903
Productae Tasch 1961
Chaenidae Gray, 1858
Pachydomella Etheridge 1907
Rhenania Fuchs 1915

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