|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Artiodactyla
It was recombined as Squalodon ambiguus by Trouessart (1898) and Trouessart (1904); it was recombined as Neosqualodon ambiguus by Kellogg (1922); it was considered an invalid subgroup of Squalodontidae by Zittel (1925); it was considered a nomen dubium by Dal Piaz (1916) and Fordyce and de Muizon (2001); it was recombined as Microcetus ambiguus by Kellogg (1923), Rothausen (1961), Sanders et al. (1982) and Tanaka and Fordyce (2015).
|Year||Name and author|
|1840||Phoca ambigua Meyer p. 1|
|1898||Squalodon ambiguus Trouessart p. 1014|
|1904||Squalodon ambiguus Trouessart p. 755|
|1922||Neosqualodon ambiguus Kellogg p. 126|
|1923||Microcetus ambiguus Kellogg pp. 5-6|
|1961||Microcetus ambiguus Rothausen p. 113|
|1982||Microcetus ambiguus Sanders et al. p. H119|
|2015||Microcetus ambiguus Tanaka and Fordyce|
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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.