|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Notoungulata - Leontiniidae
It was assigned to Ancylopoda by Ameghino (1897); to Notoungulata by Ubilla et al. (1994); and to Toxodontia by Carroll (1988), Shockey (2005), Deraco et al. (2008), Ribeiro et al. (2010), Billet (2011), Deraco and GarcÍa-López (2016) and Wyss et al. (2018).
|Year||Name and author|
|1897||Leontiniidae Ameghino p. 468|
|1994||Leontiniidae Ubilla et al. p. 98|
|2008||Leontiniidae Deraco et al.|
|2010||Leontiniidae Ribeiro et al.|
|2016||Leontiniidae Deraco and GarcÍa-López|
|2018||Leontiniidae Wyss et al.|
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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.
|B. J. Shockey 2005||Brachydont to mesodont Toxodontia with reduced canines. Canines incisiform or absent. Tendency for enlargement of an upper inci- sor to caniniform or tusk-like form. Molar protolophs much greater length than metaloph. Anteroposteriorly oriented median valley containing simple cristae, form- ing small fossettes in some species. Lingual wall of molar ectolophs with longitudinal grooves, obscured early with wear. Third lower incisor enlarged or caniniform. Broad, robust entolophid of molars containing early- formed fossettid that is not the result of a union of entolophid and hypolophid. Hypolophid of m1-2 less than half the total length of the talonid (diagnosis modified after Chaffee 1952).|