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Nothronychus
Taxonomy
Nothronychus was named by Kirkland and Wolfe (2001).
It was assigned to Therizinosauroidea by Xu et al. (2002), Li et al. (2007), Li (2008); and to Therizinosauridae by Kirkland and Wolfe (2001), Rauhut (2003), Clark et al. (2004), Zanno (2004), Kirkland et al. (2005), Zanno (2006), Zanno et al. (2009), Zanno (2010), Senter et al. (2012), Pu et al. (2013).
It was assigned to Therizinosauroidea by Xu et al. (2002), Li et al. (2007), Li (2008); and to Therizinosauridae by Kirkland and Wolfe (2001), Rauhut (2003), Clark et al. (2004), Zanno (2004), Kirkland et al. (2005), Zanno (2006), Zanno et al. (2009), Zanno (2010), Senter et al. (2012), Pu et al. (2013).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2001 | Nothronychus Kirkland and Wolfe p. 410 |
| 2002 | Nothronychus Xu et al. p. 239 |
| 2003 | Nothronychus Rauhut p. 41 |
| 2004 | Nothronychus Clark et al. p. 152 |
| 2004 | Nothronychus Zanno p. 134A |
| 2005 | Nothronychus Kirkland et al. p. 90 |
| 2006 | Nothronychus Zanno p. 648 |
| 2007 | Nothronychus Li et al. pp. 546-547 fig. 4 |
| 2008 | Nothronychus Li p. 47 |
| 2009 | Nothronychus Zanno et al. p. S4 |
| 2010 | Nothronychus Zanno p. 520 |
| 2012 | Nothronychus Senter et al. p. 11 fig. 7 |
| 2013 | Nothronychus Pu 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.
G. †Nothronychus Kirkland and Wolfe 2001
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†Nothronychus graffami Zanno et al. 2009
†Nothronychus mckinleyi Kirkland and Wolfe 2001
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. E. Zanno et al. 2009 | Nothronychus can be differentiated from all other therizinosaurs by the following autapomorphies: scapula with dorsoventrally tapering blade; distinctly subcircular obturator process; ovoid, dorsoventrally elongate obturator foramen (maximum length greater than 200% of maximum width); contact between pubis and ischium restricted to proximal half of obturator process; and presence of a deep notch between ventral aspect of obturator process and cranial ischial shaft. | |
| L. E. Zanno 2010 | A therizinosaurian bearing the following autapomorphies: scapula with dorsoventrally tapering blade; distinctly subcircular obturator process; ovoid, dorsoventrally elongate obturator foramen (maximum length greater than 200% of maximum width); contact between pubis and ischium restricted to proximal half of obturator process; and presence of a deep notch between ventral aspect of obturator process and cranial ischial shaft (Zanno et al. 2009). |