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Lainodon ragei

Mammalia - Zhelestidae

Taxonomy
Lainodon ragei was named by Gheerbrant and Astibia (2012). Its type specimen is L1AT 15, a tooth (right dP/5), and it is a 3D body fossil. Its type locality is Laño L1A, which is in a Campanian coastal sandstone/siltstone in the Vitoria Formation of Spain.

Synonymy list
YearName and author
2012Lainodon ragei Gheerbrant and Astibia p. 540

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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()
familyZhelestidaeNessov 1990
subfamilyLainodontinae
genusLainodon
speciesragei

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
E. Gheerbrant and H. Astibia 2012Zhelestid most closely related to Lainodon (L. orueetxebarriai) and Labes (L. garimondi and L. quintanillensis). Closer to Lainodon than to Labes in the mesially canted trigonid, the better developed postmetacristid, the shorter talonid, and the larger protoconid (e.g., with respect to trigonid lingual cusps). Significantly smaller than Lainodon orueetxebarriai and Labes garimondi. Differs additionally from Lainodon orueetxebarriai by the less developed bunodonty, a more elongated metaconid that is more deeply separated from the protoconid, and a weaker postmetacristid. The dP5/ shows no or weak metacingulum and postmetacrista, the latter being reduced to an inflated and short disto-labial metastylar crest which is separated from the metacone by a notch.