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Changyuraptor yangi
Taxonomy
Changyuraptor yangi was named by Han et al. (2014). Its type specimen is HG B016, a skeleton, and it is a 3D body fossil. Its type locality is Xijianchang, which is in a Barremian/Aptian terrestrial horizon in the Yixian Formation of China.
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Changyuraptor yangi Han et al. p. 2 figs. 2-4 |
| 2015 | Changyuraptor yangi Parsons and Parsons p. 6 |
| 2018 | Changyuraptor yangi Xing et al. p. 53 |
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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.
†Changyuraptor yangi Han et al. 2014
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. Han et al. 2014 | A microraptorine dromaeosaurid theropod characterized by having the unique combination of traits: furcula more robust than that of Sinornithosaurus millenii and much larger than that of Tianyuraptor ostromi; forelimb proportionally much longer when compared with hindlimb than in other microraptorines; humerus much longer (420% longer) than ulna as opposed to Microraptor zhaoianus, in which these bones are more comparable in length; metacarpal I proportionally shorter than in Sinornithosaurus millenii (1/4–1/5 versus 1/3); well developed semi-lunate carpal covering all of proximal ends of metacarpals I and II as opposed to the small semi-lunate carpal that covers about half of the base of metacarpals I and II in most other microraptorines; manual ungual phalanx of digit II is the largest, followed by that of digits I andt III, as opposed to Graciliraptor lujiatunensis in which the ungual of manual digit I is very small, and Sinornithosaurus millenii and Microraptor zhaoianus in which the unguals of manual digits I and II are comparable in size; ischium shorter than in Microraptor zhaoianus; midshaft of metatarsal IV significantly broader than that of metatarsal III or metatarsal II, as opposed to G. lujiatunensis in which metatarsal IV is the narrowest; mid-caudals roughly twice the length of dorsals as in Sinornithosaurus millenii as opposed to long caudal vertebrae in Microraptor zhaoianus; fewer caudal vertebrae (22 vertebrae) than Microraptor zhaoianus (25–26 vertebrae) and Tianyuraptor ostromi (28 vertebrae); rectrices significantly longer than in other microraptorines. |
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| References: Kiessling 2004, Marsh 1875, Holtz et al. 2000 | |||||
Age range: base of the Late/Upper Barremian to the top of the Early/Lower Aptian or 125.77000 to 119.57000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Barremian - Early/Lower Aptian | China (Liaoning) | Changyuraptor yangi (type locality: 158243) |