Psittacosaurus meileyingensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of northeastern China

  title={Psittacosaurus meileyingensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of northeastern China},
  author={Paul C. Sereno and Chao Shichin and Chen Zhengwu and Rao Chenggang},
  journal={Journal of Vertebrate Paleontology},
ABSTRACT A new psittacosaur species, Psittacosaurus meileyingensis, is based on a well preserved skull with referred cranial and postcranial remains. The skull is tall relative to its length and has a subcircular profile. Distinctive characteristics of the new species include a low horn on the quadratojugal and a prominent ventral flange on the dentary. The discovery of both Psittacosaurus meileyingensis and Psittacosaurus mongoliensis in the same formation strongly suggests their coexistence. 
A new Psittacosaurus (Dinosauria: Ceratopsia) specimen from the Yixian Formation of western Liaoning, China: the first pathological psittacosaurid
A psittacosaurid dinosaur from western Liaoning, China, possessing a pathological fibula is described, with a distinct swelling on the shaft implying that the injuries to the fibula were not fatal, as has also been noted for some theropod dinosaurs.
New psittacosaur occurrences in Inner Mongolia
Psittacosaur materials were collected from seven localities in the course of Dinosaur Project fieldwork in Inner Mongolia. Two new species of Psittacosaurus are recognized, bringing the number of
A new species of Psittacosaurus (Dinosauria: Ceratopsia) from the Early Cretaceous Yixian Formation, Liaoning, China
Abstract Newly discovered, well-preserved skulls and mandibles from the lowest part of the Early Cretaceous Yixian Formation, western Liaoning Province, China, document the earliest known record of
A New Ornithischian Dinosaur from the Lower Cretaceous Kuwajima Formation of Japan
ABSTRACT A new ornithischian dinosaur, Albalophosaurus yamaguchiorum gen. et sp. nov., is described on the basis of a partial skull and lower jaw recovered from the Lower Cretaceous Kuwajima
The tiny horned dinosaur Gobiceratops minutus gen. et sp. nov. (Bagaceratopidae, Neoceratopsia) from the Upper Cretaceous of Mongolia
A new horned dinosaur, Gobiceratops minutus gen. et sp. nov. (Bagaceratopidae, Neoceratopsia), from the Upper Cretaceous Baruungoyot Formation of the Khermin Tsav locality (southern Mongolia) is
Psittacosaurus amitabha, a New Species of Ceratopsian Dinosaur from the Ondai Sayr Locality, Central Mongolia
This taxon expands the knowledge of the already-speciose genus Psittacosaurus as well as the understanding of the Ondai Sayr fauna, which is poorly known in comparison to other Mongolian Early Cretaceous localities.
The earliest ceratopsian from the Tuchengzi Formation of Liaoning, China
ABSTRACT A new ceratopsian specimen, Chaoyangsaurus youngi gen. et sp. nov., was collected from the Tuchengzi Formation (Middle or Late Jurassic) of Liaoning, China. Distinctive characteristics of
A psittacosaurid dinosaur from the Cretaceous of Thailand and its implications for the palaeogeographical history of Asia
Primitive ceratopian dinosaurs of the family Psittacosauridae were hitherto known only from central and northern Asia, from northern China to Mongolia and Siberia. This paper reports the discovery of
New Data on Cranial Anatomy of the Ceratopsian Dinosaur Psittacosaurus major
An exceptionally preserved skull and mandible of ceratopsian dinosaur Psittacosaurus major revealed many anatomical details such as the existence of an elliptical median interpremaxillary foramen, a
A Ceratopsian dinosaur Psittacosaurus sibiricus from the Early Cretaceous of West Siberia, Russia and its phylogenetic relationships
The three lateral foramina on the exoc‐cipital/opisthotic are interpreted as exits for cranial nerves X+XI, XII1+2 and XII3, in contrast with previous interpretations.


The cheeks of ornithischian dinosaurs
The evolution of self-sharpening cheek teeth and of cheeks enabled ornithischians to eat much more resistant plant material and resulted in ornithishians replacing prosauropods as the ‘small to medium sized’ terrestrial herbivores (up to 10 m).
Additional characters of the Ceratopsidae, with notice of new Cretaceous dinosaurs
THE gigantic horned Dinosaurs from the Laramie, which have already been described by the writer, in this Journal,* are still under illvestigation, and many new points in their structure have recently