[D] Psittacosaurus mongoliensis [Su]
Describer
Osborn, 1923
Time
Cretaceous Early Aptian Albian
Classification
Ornithischia Genasauria Cerapoda Marginocephalia Ceratopia Neoceratopia Psittacosauridae
Diet
Herbivore
Fossilsite
Khukhtekskaya Svita, Dornogov, Khulsyngolskaya Svita, Dundgov, Shinekhudukskaya Svita, Unnamed unit, Bayankhongor, Khukhtekskaya Svita, Ovorknahgai, Mongolia; Unnamed unit, Nei Mongol Zizhiqu, China; Bayin Gobi Formation, (LH PV3), China; Shestakovskaya Svita, Kemerovskaya oblast - Russia
Fall Under
Psittacosaurus
Info
Skull
Psittacosaurus (Osborn, 1923) = Protiguanodon (Osborn, 1923)
Psittacosaurus > Psittacosaurus guyangensis (Cheng, 1983)
Psittacosaurus > Psittacosaurus mongoliensis (Osborn, 1923) = Psittacosaurus protiguanodonensis (Young, 1958) > Protiguanodon mongoliensis (Osborn, 1923)
Psittacosaurus > Psittacosaurus osborni (Young, 1931) > Psittacosaurus tingi (Young, 1931)
Psittacosaurus > Psittacosaurus sinensis (Young, 1958) > > Psittacosaurus youngi (Chao, 1962)
Psittacosaurus > Psittacosaurus meileyingensis (Sereno, Chao, Cheng & Rao, 1988)
Psittacosaurus > Psittacosaurus xinjiangensis (Sereno & Chao, 1988)
Psittacosaurus > Psittacosaurus neimongoliensis (Russell & Zhao, 1996)
Psittacosaurus > Psittacosaurus mazongshanensis (Dong & Azuma, 1996)
Psittacosaurus > Psittacosaurus ordosensis (Russell & Zhao, 1996)
Psittacosaurus > Psittacosaurus lujiatunensis (Zhou, Gao, Fox, and Chen, 2006)
Psittacosaurus > Psittacosaurus sibiricus (Averianov, Voronkevich, Leshchinskiy, Fayngertz, 2006)
Psittacosaurus> Psittacosaurus major - (Sereno, Zhao, Brown and Tan 2007)
Psittacosaurus> Psittacosaurus gobiensis (Sereno, Zhao & Tan 2010)
More than 75 individuals including more than 15 skeletons.
Diagnosis
Antorbital fossa triangular; lateral margin of prefrontal upturned; jugal horn posteroventrally extended; obtuse angle between two planes of lateral surface of jugal; posterodorsal margin of orbit formed by frontal; horizontal frill; caudal margin of shaft of quadrate slightly excavated; dorsal end of quadrate separated from paroccipital process of squamosal. (Xu and Zhao, 1999)