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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…
The skull of Monolophosaurus jiangi (Dinosauria: Theropoda) and its implications for early theropod phylogeny and evolution
The skull of Monolophosaurus is redescribed, which is one of the most complete basal tetanuran skulls known and the only quality source of cranial data for Middle Jurassic Chinese theropods, and several features suggest a basal position within Tetanurae, which contrasts with most published cladistic analyses.
Mud-Trapped Herd Captures Evidence of Distinctive Dinosaur Sociality
- D. Varricchio, P. Sereno, Z. Xijin, T. Lin, Jeffery A. Wilson, Gabrielle H. Lyon
- Environmental Science
- 1 December 2008
A unique dinosaur assemblage from the Cretaceous beds of western Inner Mongolia preserves geologic and paleontologic data that clearly delineate both the timing and mechanism of death. Over twenty…
New psittacosaurid highlights skull enlargement in homed dinosaurs
The evolution of extraordinary absolute and relative skull size among ceratopsians appears to have been driven by sexual selection and involved the tandem evolution of reduced head mobility and an obligate quadrupedal posture.
A new psittacosaur from Inner Mongolia and the parrot-like structure and function of the psittacosaur skull
A novel isognathous jaw mechanism that combines aspects of arcilineal (vertical) and propalinal (horizontal) jaw movement is described that was able to maintain oblique shearing occlusion in an akinetic skull designed to resist high bite forces in psittacosaurs.
A re-evaluation of Chinshakiangosaurus chunghoensis Ye vide Dong 1992 (Dinosauria, Sauropodomorpha): implications for cranial evolution in basal sauropod dinosaurs
- P. Upchurch, P. Barrett, Z. Xijin, X. Xing
- Environmental Science, GeographyGeological Magazine
- 9 February 2007
It seems that basal sauropodomorphs (traditional prosauropod taxa) possessed a fleshy cheek that attached to the mandible along a marked ridge, and that the same structure was present in the most basalsauropods.
A New Titanosaurian Sauropod from Late Cretaceous of Nei Mongol, China
A specimen collected from the Upper Cretaceous Erlian Formation of Nei Mongol, China, represents a new genus and species of titanosaurian sauropod, which has an unusual combination of primitive and derived character states.
A primitive ichthyosaur from the lower Triassic of British Columbia, Canada
A New Ceratopsian from the Upper Jurassic Houcheng Formation of Hebei, China
Abstract A new ceratopsian taxon Xuanhuaceratops niei gen. et sp. nov. is erected based on four fragmentary specimens collected from the Late Jurassic Houcheng Formation, Hebei Province, China.…
The postcranial skeleton of Monolophosaurus jiangi (Dinosauria: Theropoda) from the Middle Jurassic of Xinjiang, China, and a review of Middle Jurassic Chinese theropods
- Z. Xijin, R. Benson, S. Brusatte, P. Currie
- Geography, Environmental ScienceGeological Magazine
- 9 July 2009
Abstract The Middle Jurassic was a critical time in the evolution of theropod dinosaurs, highlighted by the origination and radiation of the large-bodied and morphologically diverse Tetanurae. Middle…