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Leontiniidae

Mammalia - Notoungulata - Leontiniidae

Synonymy list
YearName and author
1894Leontiniidae Ameghino
1897Leontiniidae Ameghino p. 468
1988Leontiniidae Carroll
1994Leontiniidae Ubilla et al. p. 98
2005Leontiniidae Shockey
2008Leontiniidae Deraco et al.
2010Leontiniidae Ribeiro et al.
2011Leontiniidae Billet
2016Leontiniidae Deraco and GarcÍa-López
2018Leontiniidae Wyss et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
RankNameAuthor
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
orderNotoungulata
suborderToxodontiaAmeghino 1887
familyLeontiniidaeAmeghino 1894
familyLeontiniidaeAmeghino 1894

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.

Diagnosis
ReferenceDiagnosis
B. J. Shockey 2005Brachydont 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).