|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Avetheropoda - Metriacanthosauridae
It was recombined as Sinraptor hepingensis by Currie and Zhao (1994), Dong (1997), Rauhut (2003), Holtz et al. (2004), Wu et al. (2009) and Carrano et al. (2012).
|Year||Name and author|
|1992||Yangchuanosaurus hepingensis Gao|
|1994||Sinraptor hepingensis Currie and Zhao p. 2039|
|1997||Sinraptor hepingensis Dong p. 122|
|1999||Yangchuanosaurus hepingensis Gao|
|2003||Sinraptor hepingensis Rauhut p. 27|
|2004||Sinraptor hepingensis Holtz, Jr. et al. p. 74|
|2008||Yangchuanosaurus hepingensis Watabe et al. p. 35|
|2009||Sinraptor hepingensis Wu et al. pp. 18-19|
|2009||Yangchuanosaurus hepingensis Xing et al. p. 1391|
|2012||Sinraptor hepingensis Carrano et al. pp. 245, 248|
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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.
|Y. Gao 1992||Body large, reaching 8 m In length. Skull robust, facial portion low, long, with ratio of skull length/height 1.75. Two antorbital fenestrae; first antorbital fenestra well-developed, elongated in anteroposterior direction, forming isosceles triangle; second antorbital fenestra small, rectangular in outline. Maxillary depression long, elliptical. Parietal strongly pronounced, with well-developed posterior process. Supraoccipital narrow, with well-developed median ridge. Lacrimal tilted anteriorly, coming into contact with postorbital at dorsal edge of orbit. Dentary thick, strong, relatively high. Teeth relatively small. Premaxillary and maxillary teeth with thin crown; dental formula Pm4M13-14/D16.
9 cervical vertebrae, opisthocoelous; posteriorly-located cervical vertebrae bearing ventral
ridge. 14 dorsal vertebrae, with relatively short, amphiplatyan centra and high, flat neural spines. 5 sacral vertebrae fused together. Caudal vertebrae amphicoelous, with long prezygapophyses in middle and posterior vertebrae. Scapular shaft wide. Ilium high, with anterior lobe curved ventrally. Pubic foramen small, and pubic foot short, broad. Ischium expanded distally.
|M. T. Carrano et al. 2012||As with Yangchuanosaurus shangyouensis (q.v.), it is not clear whether ‘Yangchuanosaurus’ hepingensis possesses autapomorphies or can only be distinguished by a unique combination of characters (see Remarks, below).|