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Bienotheriidae (disused)

Mammalia - Multituberculata - Bienotheriidae

Taxonomy
Bienotheriidae was named by Young (1940). It is not extant. Its type is Bienotherium.

It was corrected as Bienotheridae by Young (1951).

It was assigned to Tritylodontoidea by Young (1940), Young (1947) and Young (1951).

Synonymy list
YearName and author
1940Bienotheriidae Young
1947Bienotheridae Young
1951Bienotheridae Young p. 79

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Allotheria()
orderMultituberculataCope 1884
suborderTritylodontoidea
familyBienotheriidae
familyBienotheriidae

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.

Fm. †Bienotheriidae Young 1940
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Diagnosis
ReferenceDiagnosis
C.-C. Young 1951Tritylodontoidea with the dental formula I1, C0, Pc6-7/I1?, C0?, Pc6-7. Anterior post canine teeth are fully molarized. All the cheek teeth are oblique, subquadrate in outline. Upper teeth have three rows of tubercles and, lower, two rows. Skull is truncated both anteriorly and posteriorly. Snout is short and pointed. Choanae is small and far forward situated near the tip of the skull. Septomaxilla and lacrymal are much reduced. No postorbital. Zygomotic arch is strongly expanded and extending posteriorly up to the very marginal part slightly overhanging the occiput. Lower jaw is robust with vestiges of articular and surangular besides the big dental. Articulation with both quadrate and squamosal is probable.