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Agilisaurus
Taxonomy
Agilisaurus was named by Peng (1990).
It was synonymized subjectively with Yandusaurus by Sereno (1997).
It was assigned to Ornithopoda by Buchholz (2002); to Euornithopoda by Norman et al. (2004); to Ornithischia by Barrett et al. (2005); to Neornithischia by Butler et al. (2007), Butler et al. (2008) and Butler and Sullivan (2009); to Fabrosauridae by Peng (1992), Dong (1997), Peng (1997), Dong (1997), Knoll (1999), Peng et al. (2005) and Li et al. (2011); to Hypsilophodontidae by Sues (1997) and Alifanov (2018); to Neornithischia by Han et al. (2012), Madzia et al. (2018) and Herne et al. (2019); and to Genasauria by Dieudonné et al. (2020).
It was synonymized subjectively with Yandusaurus by Sereno (1997).
It was assigned to Ornithopoda by Buchholz (2002); to Euornithopoda by Norman et al. (2004); to Ornithischia by Barrett et al. (2005); to Neornithischia by Butler et al. (2007), Butler et al. (2008) and Butler and Sullivan (2009); to Fabrosauridae by Peng (1992), Dong (1997), Peng (1997), Dong (1997), Knoll (1999), Peng et al. (2005) and Li et al. (2011); to Hypsilophodontidae by Sues (1997) and Alifanov (2018); to Neornithischia by Han et al. (2012), Madzia et al. (2018) and Herne et al. (2019); and to Genasauria by Dieudonné et al. (2020).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Agilisaurus Peng figs. 1-6 |
| 1992 | Agilisaurus Peng p. 39 |
| 1997 | Agilisaurus Dong p. 121 |
| 1997 | Agilisaurus Peng p. 238 |
| 1997 | Agilisaurus Sues p. 357 |
| 1999 | Agilisaurus Knoll p. 65 |
| 2002 | Agilisaurus Buchholz p. 21 |
| 2004 | Agilisaurus Norman et al. p. 394 |
| 2005 | Agilisaurus Barrett et al. p. 830 |
| 2005 | Agilisaurus Peng et al. |
| 2007 | Agilisaurus Butler et al. p. 2044 |
| 2008 | Agilisaurus Butler et al. p. 20 figs. 2-4 |
| 2009 | Agilisaurus Butler and Sullivan p. 22 |
| 2011 | Agilisaurus Li et al. p. 23 |
| 2012 | Agilisaurus Han et al. p. 1391 fig. 14 |
| 2018 | Agilisaurus Alifanov p. 1636 |
| 2018 | Agilisaurus Madzia et al. p. 973 fig. 4 |
| 2019 | Agilisaurus Herne et al. p. 573 |
| 2020 | Agilisaurus Dieudonné et al. |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. M. Barrett et al. 2005 | (characters from the original diagnosis marked with ‘*’). A small ornithischian dinosaur that can be distinguished from other basal ornithischians by the presence of several cranial autapomorphies: presence of a palpebral/ supraorbital bar that traverses the width of the orbit* (acquired convergently in Dryosaurus); premaxillary teeth opposing three teeth in the rostral part of the dentary*; rostralmost dentary teeth conical, resembling premaxillary teeth; presence of a series of low, rostrolaterally directed ridges on the orbital portion of the frontal; and presence of an excavation or embayment on the ascending process of the maxilla, immediately rostral to the antorbital fossa. | |
| G. Peng et al. 2005 | Small primitive ornithopod with a body length of about 1~2 m. It is characterized by short but deeper skull; long nasal with a longitudinal median depression; posterior process of premaxilla no contact lachrymal; maxilla and dentary with remarkable depression marking for M. buccinatoris; higher coronoid eminence of mandible; scapula shorter than humerus; forelimb less than 1/2 of length of hindlimb; lower positioned less trochanter of femur; metatarsal III more than 1/2 of femur length. |