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Hexinlusaurus multidens
Taxonomy
Yandusaurus multidens was named by He and Cai (1983). It is not extant. Its type specimen is ZDM T6001. Its type locality is Dashanpu Dinosaur Quarry [lower], which is in a Bajocian/Oxfordian lacustrine sandstone/mudstone in the Shaximiao Formation of China.
It was synonymized subjectively with Yandusaurus honheensis by Sues and Norman (1990); it was synonymized subjectively with Xiaosaurus dashanpensis by Dong (1992); it was recombined as Agilisaurus multidens by Peng (1992), Sues (1997) and Peng et al. (2005); it was synonymized subjectively with Yandusaurus hongheensis by Carpenter (1994); it was recombined as Proyandusaurus multidens by Knoll (1999); it was recombined as Hexinlusaurus multidens by Barrett et al. (2005), Butler et al. (2008), Butler and Sullivan (2009), Butler and Zhao (2009), Carpenter (2010), Zheng et al. (2012), Han et al. (2012), Xing et al. (2014), Alifanov and Saveliev (2014), Herne et al. (2018), Herne et al. (2019), Ibiricu et al. (2019), Cruzado-Caballero et al. (2019), Manitkoon et al. (2023) and Manitkoon et al. (2023).
It was synonymized subjectively with Yandusaurus honheensis by Sues and Norman (1990); it was synonymized subjectively with Xiaosaurus dashanpensis by Dong (1992); it was recombined as Agilisaurus multidens by Peng (1992), Sues (1997) and Peng et al. (2005); it was synonymized subjectively with Yandusaurus hongheensis by Carpenter (1994); it was recombined as Proyandusaurus multidens by Knoll (1999); it was recombined as Hexinlusaurus multidens by Barrett et al. (2005), Butler et al. (2008), Butler and Sullivan (2009), Butler and Zhao (2009), Carpenter (2010), Zheng et al. (2012), Han et al. (2012), Xing et al. (2014), Alifanov and Saveliev (2014), Herne et al. (2018), Herne et al. (2019), Ibiricu et al. (2019), Cruzado-Caballero et al. (2019), Manitkoon et al. (2023) and Manitkoon et al. (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Yandusaurus multidens He and Cai p. 6 |
| 1984 | Yandusaurus multidens He and Cai pp. 4-5 |
| 1992 | Agilisaurus multidens Peng p. 53 |
| 1997 | Agilisaurus multidens Sues p. 357 |
| 1999 | Proyandusaurus multidens Knoll p. 65 |
| 2002 | Yandusaurus multidens Buchholz p. 19 |
| 2005 | Hexinlusaurus multidens Barrett et al. p. 830 |
| 2005 | Agilisaurus multidens Peng et al. |
| 2005 | Yandusaurus multidens Zan et al. p. 187 |
| 2008 | Hexinlusaurus multidens Butler et al. p. 9 |
| 2009 | Hexinlusaurus multidens Butler and Sullivan p. 27 |
| 2009 | Hexinlusaurus multidens Butler and Zhao pp. 65-66 |
| 2010 | Hexinlusaurus multidens Carpenter p. 156 |
| 2011 | Yandusaurus multidens Li et al. p. 23 |
| 2012 | Hexinlusaurus multidens Han et al. p. 1391 fig. 14 |
| 2012 | Hexinlusaurus multidens Zheng et al. p. 208 |
| 2014 | Hexinlusaurus multidens Alifanov and Saveliev p. 423 |
| 2014 | Hexinlusaurus multidens Xing et al. p. 207 |
| 2018 | Hexinlusaurus multidens Herne et al. p. 47 |
| 2019 | Hexinlusaurus multidens Cruzado-Caballero et al. p. 216 |
| 2019 | Hexinlusaurus multidens Herne et al. p. 573 |
| 2019 | Hexinlusaurus multidens Ibiricu et al. p. 280 |
| 2023 | Hexinlusaurus multidens Manitkoon et al. p. 1 |
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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.
†Hexinlusaurus multidens He and Cai 1983
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. M. Barrett et al. 2005 | A small ornithischian dinosaur distinguished from all other basal ornithischians by a single autapomorphy, the presence of a marked concavity that extends over the lateral surface of the postorbital. | |
| G. Peng et al. 2005 | Small cursorial primitive ornithopod recognized by small, short but deep skull; relatively short snout; large orbit slightly anteriorly positioned; small and triangular antorbital vacuity lower positioned and enclosed medially; large infratemporal fenestra; extraordinarily developed occipital crest; straight ventral margin of jugal; much more cheek teeth with obvious lateral ridges, but without median ridge; scapula shorter than humerus; forelimb less than 1/2 of length of hindlimb; lower placed less trochanter of femur; tibia about 118% of femur length; metatarsal III more than 1/2 of femur length. | |
| R. J. Butler et al. 2008 | A marked concavity that extends over the lateral surface of the postorbital. |