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Bienotherium Temporal range: Hettangian–Sinemurian PreꞒ Ꞓ O S D C P T J K Pg N
Bienotherium yuannanese
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Family:	†Tritylodontidae
Genus:	†Bienotherium Young, 1940
Species
B. yuannanese (type) Young, 1940 B. magnum
Synonyms
B. elegans (B. yuannanese)

Bienotherium is an extinct genus of cynodonts from the Early Jurassic of China discovered by Bian Meinian (Mei Nien Bien). Despite its size, it is closely related to Lufengia, and is the largest tritylodont from the Lufeng Formation in China.

Bienotherium had four incisors, no canines, and back molar-like teeth, which it used to chew tough plant material.

Description

Bienotherium is defined as being big and robust compared to other tritylodonts, and also by exposed maxillaries in the skull, an unusually long diastema and thin zygomatic bone.

References

1. ^ "The Paleobiology Database". Archived from the original on July 18, 2011. Retrieved May 21, 2010.
2. ^ "Palæos Vertebrates". Archived from the original on December 19, 2008. Retrieved May 21, 2010.
3. ^ Lucas, Spencer G. (2001). Chinese Fossil Vertebrates. New York City, Chichester, West Sussex: Columbia University Press. p. 133. ISBN 0-231-08482-X. Retrieved May 24, 2010.
4. Blount, Kitty; Crowley, Maggie; Bada, Kathleen; Malyan, Susan; Sparrow, Giles; Thiro, Rosalyn; Walisiewicz, Marek, eds. (2008) . Encyclopedia of Dinosaurs and Other Prehistoric Life. New York City: DK Publishing Special Markets. p. 203. ISBN 978-0-7566-3836-8.

Further reading

Chinese Fossil Vertebrates, p. 133

v t e Cynodontia
Kingdom: Animalia Phylum: Chordata Clade: Synapsida Clade: Therapsida Clade: Eutheriodontia Synapsida see Synapsida Cynodontia see below↓
Cynodontia Cynodontia †Dvinia †Nanocynodon †Madysaurus †Uralocynodon †Charassognathidae Abdalodon Charassognathus Nshimbodon †Procynosuchidae Procynosuchus Sludica Epicynodontia †Bolotridon †Cynosaurus †Nanictosaurus †Nythosaurus †Platycraniellus †Thrinaxodon †Vetusodon †Galesauridae Galesaurus Progalesaurus Eucynodontia †Kataigidodon †Cynognathia see Cynognathia Probainognathia see below↓
Probainognathia Probainognathia †Agudotherium †Candelariodon †Charruodon †Lumkuia †Protheriodon †Tessellatia †Chiniquodontidae Aleodon Chiniquodon Cromptodon? Riojanodon †Probainognathidae Bonacynodon Probainognathus †Ecteniniidae Diegocanis Ecteninion Trucidocynodon Prozostrodontia †Alemoatherium †Deccanodon †Dromatherium †Inditherium †Microconodon †Polonodon †Pseudotriconodon †Rewaconodon †Santacruzgnathus †Therioherpeton †Tricuspes †Prozostrodontidae Prozostrodon Pseudotherium †Tritheledontidae Chaliminia Diarthrognathus Elliotherium Irajatherium Pachygenelus Riograndia? Tritheledon Mammaliamorpha †Adelobasileus †Botucaraitherium †Brasilodon †Sinoconodon †Tikiodon †Tritylodontidae Bienotherium Bienotheroides Bocatherium Dianzhongia Dinnebitodon Fossiomanus Kayentatherium Lufengia Montirictus Nuurtherium Oligokyphus Polistodon Shartegodon Stereognathus Tritylodon Xenocretosuchus Yuanotherium Yunnanodon Mammaliaformes see below↓
Mammaliaformes Mammaliaformes †Bocaconodon †Brachyzostrodon †Bridetherium †Cherwellia †Cifellilestes †Delsatia †Dianoconodon †Dinnetherium †Dyskritodon †Eozostrodon †Erythrotherium †Gondwanadon †Hadrocodium †Hallautherium †Helvetiodon †Indotherium †Indozostrodon †Megazostrodon †Morganucodon †Paceyodon †Paikasigudodon †Purbeckodon †Rosierodon †Sinoconodon? †Storchodon †Stylidens †Wareolestes †Woutersia †Kuehneotheriidae Fluctuodon Kotatherium Kuehneon Kuehneotherium †Shuotheriidae Feredocodon Itatodon? Paritatodon? Pseudotribos Shuotherium †Docodonta Agilodocodon Borealestes Castorocauda Cyrtlatherium Dobunnodon Docodon Docofossor Dsungarodon Ergetiis Gondtherium? Haldanodon Hutegotherium Itatodon? Khorotherium Krusatodon Microdocodon Paritatodon? Peraiocynodon Sibirotherium Simpsonodon Tashkumyrodon Tegotherium †Haramiyida Avashishta? Hypsiprymnopsis? Haramiyavia Kalaallitkigun Kollikodon? Mojo? Theroteinus Thomasia Euharamiyida Allostaffia? Arboroharamiya Baidabatyr? Butlerodon Cryoharamiya Kermackodon? Maiopatagium Megaconus? Qishou Sharypovoia Shenshou Sineleutherus Vilevolodon Woodeatonia Xianshou Gondwanatheria? Hahnodontidae? Cifelliodon Denisodon Hahnodon Crown-Mammalia see Mammalia
See also Incertae sedis †Cistecynodon †Eoraetia †Gaumia †"Hahnia" †Kunminia †Lepagia †Meurthodon †Mitredon †Panchetocynodon †Redondagnathus †Saurodesmus? Paraphyletic / Polyphyletic groups Dromatheriidae Morganucodonta Symmetrodonta Triconodonta
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• Tritylodontids
• Early Jurassic synapsids of Asia
• Fossil taxa described in 1940
• Taxa named by Yang Zhongjian
• Hettangian genus first appearances
• Sinemurian genus extinctions
• Cynodont stubs