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Tendagurodon janenschi

Mammalia - Eutriconodonta - Amphilestidae

Taxonomy
Tendagurodon janenschi was named by Heinrich (1998). Its type specimen is MB.Ma.46911, a tooth (?lower cheek tooth), and it is a 3D body fossil. Its type locality is Tendaguru quarry Ig, Kindope, which is in a Kimmeridgian channel lag siltstone in the Tendaguru Formation of Tanzania. It is the type species of Tendagurodon.

Synonymy list
YearName and author
1998Tendagurodon janenschi Heinrich pp. 272-274 figs. 1-2
2004Tendagurodon janenschi Kielan-Jaworowska et al. pp. 219, 240

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
RankNameAuthor
Cotylosauria()
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderEutriconodontaKermack et al. 1973
familyAmphilestidae(Osborn 1888)
genusTendagurodon
speciesjanenschi

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
W. -D. Heinrich 1998Known only from a double-rooted cheek tooth, tentatively identified as right lower molar. Tooth crown linguolabially compressed, elongated, without mesial indentation, with three main cusps (a, b, c), and two basal cusps (d, e). The cusps are arranged mesiodistally, and they are closer to the lingual margin of the tooth crown than to the labial. The cusp formula reads a > c > b > d > e. The principal cusp a is substantially larger than the main cusps b and c. Main cusp c is situated at a higher level than b. Except for very faintly developed anterolingual and anterolabial cingula, which are located below the cusps b and e, well-defined cingula are lacking. The cross sections of the roots are anteroposteriorly elongated.