|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Artiodactyla - Merycoidodontidae
It was recombined as Cyclopidius californica by Schlaikjer (1935); it was recombined as Cyclopidius californicus by Thorpe (1937); it was synonymized subjectively with Sespia nitida by Lander (1983) and Lander (1998); it was recombined as Sespia californica by Schultz and Falkenbach (1968), Mason and Swisher (1989), CoBabe (1996), Hoffman and Prothero (2003), Hoffman and Prothero (2004) and Stevens and Stevens (2007).
|Year||Name and author|
|1930||Leptauchenia californica Stock|
|1935||Cyclopidius californica Schlaikjer|
|1937||Cyclopidius californicus Thorpe|
|1968||Sespia californica Schultz and Falkenbach|
|1989||Sespia californica Mason and Swisher|
|1996||Sespia californica CoBabe|
|2003||Sespia californica Hoffman and Prothero|
|2004||Sespia californica Hoffman and Prothero p. 156|
|2007||Sespia californica Stevens and Stevens p. 158|
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.