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Monolophosaurus jiangi
Taxonomy
Monolophosaurus jiangi was named by Zhao and Currie (1994). Its type specimen is IVPP 84019, a partial skeleton, and it is a 3D body fossil. Its type locality is Jiangjunmiao theropod (CCDP), which is in a Callovian terrestrial sandstone in the Shishugou Formation of China. It was considered monophyletic by Currie (2000).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1992 | Monolophosaurus jiangjunmiaoi Dong |
| 1994 | Monolophosaurus jiangi Zhao and Currie p. 2028 figs. 1-5 |
| 1997 | Monolophosaurus jianji Vickaryous and Ryan p. 488 |
| 1999 | Monolophosaurus jiangi Knoll et al. p. 106 |
| 2000 | Monolophosaurus jiangi Currie p. 434 |
| 2001 | Monolophosaurus jiangi Dong p. 98 |
| 2003 | Monolophosaurus jiangi Rauhut p. 20 |
| 2004 | Monolophosaurus jiangi Holtz, Jr. et al. p. 74 |
| 2007 | Monolophosaurus jiangi Sampson and Witmer p. 38 |
| 2008 | Monolophosaurus jiangi Watabe et al. p. 35 |
| 2010 | Monolophosaurus jiangi Choiniere et al. p. 1773 |
| 2010 | Monolophosaurus jiangi Zhao et al. |
| 2011 | Monolophosaurus jiangi Jasinski p. 198 |
| 2012 | Monolophosaurus jiangi Carrano et al. p. 237 |
| 2013 | Monolophosaurus jiangi Fernandes de Azevedo et al. p. 134 |
| 2020 | Monolophosaurus jiangi Malafaia et al. p. 4 |
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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.
†Monolophosaurus jiangi Zhao and Currie 1994
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Invalid names: Monolophosaurus jiangjunmiaoi Dong 1992 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| X.-J. Zhao et al. 2010 | Skull with midline crest (formed by the paired premaxillary, nasal, lacrimal, and frontal bones) extending above exxternal naris to a point between orbits. Long, low external naris, and anteroposteriorly elongate premaxilla. Antorbital sinuses in nasals confluent through openings in base of crest | |
| M. T. Carrano et al. 2012 | Tetanuran with: (1) nasal process of premaxilla bifurcated posteriorly (Brusatte et al. 2010a); (2) lateral surface of premaxilla with deep groove between subnarial foramen and foramen on base of nasal process (Brusatte et al. 2010a); (3) large midline crest formed by nasals with straight dorsal margin nearly parallel to maxillary alveolar margin (modified from Zhao & Currie 1994); (4) two enlarged, subequal pneumatic fenestrae in posterodorsal part of narial fossa (Brusatte et al. 2010a); (5) lacrimal with discrete, tab-like process projecting dorsally above preorbital bar (Brusatte et al. 2010a); and (6) rectangular frontals, much wider than long (width/length = 1.67) (Brusatte et al. 2010a). |
Measurements
No measurements are available
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| Source: o = order | |||||
| References: Marsh 1875, Kiessling 2004 | |||||