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.

The Reptile Database

Name Relationship
Alligator mississippiensis DAUDIN 1802 Preferred
Crocodilus mississipiensis DAUDIN 1802 Synonym
Crocodilus lucius CUVIER 1807: 28
Crocodilus cuvieri LEACH 1815: 117
Crocodilus lucius — CUVIER 1831: 106
Alligator lucius — DUMÉRIL & BIBRON 1836: 75
Alligator mississippiensis — HOLBROOK 1842: 53
Alligator lucius — CLARKE 1888
Alligator mississippiensis — CONANT & COLLINS 1991: 39

Species 2000 & ITIS Catalogue of Life: April 2013

Name Relationship
Alligator mississippiensis DAUDIN 1802 Preferred
Alligator lucius DUMÉRIL 1836
Crocodilus cuvieri LEACH 1815
Crocodilus lucius CUVIER 1807
Crocodilus mississipiensis DAUDIN 1802

NCBI Taxonomy

Name Relationship
Alligator mississippiensis Preferred
Alligator mississipiensis Misspelling


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