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Zhanghenglong yangchengensis
Taxonomy
Zhanghenglong yangchengensis was named by Xing et al. (2014). Its type specimen is XMDFEC V0013, a partial skull (an incomplete, disarticulated cranium, including the nearly complete right maxilla, as well as the partial right jugal and dentary), and it is a 3D body fossil. Its type locality is Zhoujiagou Village (Unit 2), which is in a Santonian terrestrial horizon in the Majiacun Formation of China. It is the type species of Zhanghenglong.
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Zhanghenglong yangchengensis Xing et al. pp. 4-5 figs. 2-11 |
| 2015 | Zhanghenglong yangchengensis Tan et al. p. 259 |
| 2017 | Zhanghenglong yangchengensis Cruzado-Caballero and Powell p. 12 fig. 13 |
| 2020 | Zhanghenglong yangchengensis Dalla Vecchia p. 585 |
| 2021 | Zhanghenglong yangchengensis Kobayashi et al. p. 9 |
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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.
†Zhanghenglong yangchengensis Xing et al. 2014
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. Xing et al. 2014 | Medium-sized hadrosauroid ornithopod characterized by the following autapomorphies: strongly deflected posteroventrally posterior third of the maxilla relative to the anterior two thirds of the same element, and crowns of dentary teeth with both median and distally offset primary ridges. Also diagnosed by a unique combination of the following features: five maxillary foramina consisting of four scattered small ones anteroposteriorly arranged in a row and a large one close to the ventral extremity of the jugal articular surface of the maxilla; markedly convex dorsally maxillary and dentary occlusal surfaces; elevated maxillary body that is approximately 150% longer than tall; laterally exposed, large anterior foramen limited to the anterior half of the anterodorsal surface of the maxilla and located just lateral to the premaxillary articular surface of the bone; relatively long, well-developed ectopterygoid ridge; dorsoventrally low anterior process of the jugal with a lunate articular facet for the palatine along its posterior border; dorsoventrally deep embayment along the ventral margin of the jugal; dentary showing 26 alveolar positions; long axis of the dentary occlusal surface parallel with the lateral side of the dentary ramus; maxillary tooth crowns with sigmoid and nearly straight primary ridges; one or two functional teeth per alveolus for most of the dentary occlusal surface; no more than four teeth per dentary alveolus; scapular neck strongly constricted dorsoventrally; and dorsal margin of the scapula arcuate. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Benton 1983, Marsh 1875 | |||||