|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was reranked as the order Ungulata by Gray (1825), Flower and Lydekker (1891), Parker and Haswell (1897) and Lambe (1908); it was reranked as the superorder Ungulata by Hay (1930) and Prothero and Schoch (1989); it was considered an invalid subgroup of Eutheria by Madsen et al. (2001).
It was assigned to Educabilia by Bonaparte (1850); to Heterodonta by Ameghino (1889); to Monodelphia by Cope (1889); to Eutheria by Flower and Lydekker (1891); to Ditremata by Ameghino (1894); to Eutheria by Parker and Haswell (1897); to Eutheria by Flower (1883) and Gregory (1910); to Monodelphia by Hay (1930); to Tokotheria by McKenna (1975); to Eutheria by Prothero and Schoch (1989); to Ungulatomorpha by Archibald (1998); to Mammalia by Gray (1825), Andrews (1906), Lambe (1908) and McKenna and Lofgren (2003); and to Epitheria by Shoshani and Tassy (2005).
|Year||Name and author|
|1825||Ungulata Gray p. 342|
|1850||Ungulata Bonaparte p. 1|
|1883||Ungulata Flower p. 184|
|1889||Ungulata Ameghino p. 354|
|1889||Ungulata Cope p. 875|
|1891||Ungulata Flower and Lydekker p. 89|
|1894||Ungulata Ameghino p. 11|
|1897||Ungulata Parker and Haswell p. 452|
|1906||Ungulata Andrews p. 1|
|1910||Ungulata Gregory p. 466|
|1930||Ungulata Hay p. 600|
|1975||Ungulata McKenna p. 42|
|1989||Ungulata Prothero and Schoch p. 530|
|2003||Ungulata McKenna and Lofgren p. 635|
|2005||Ungulata Shoshani and Tassy p. 9|
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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.