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Syntarsus kayentakatae
Taxonomy
Syntarsus kayentakatae was named by Rowe (1989). Its type specimen is MNA V2623, a partial skeleton, and it is not a trace fossil. Its type locality is Rock Head North (MNA 555-3, MCZ 18/78/A), which is in a Sinemurian/Pliensbachian terrestrial sandstone in the Kayenta Formation of Arizona.
It was recombined as Coelophysis kayentakatae by Bristowe and Raath (2004) and Rinehart et al. (2007); it was recombined as Megapnosaurus kayentakatae by Irmis (2004), Milner et al. (2006), Smith and Merrill (2006), Spielmann et al. (2007), Jasinski (2011), Tweet et al. (2012) and Martínez et al. (2013).
It was recombined as Coelophysis kayentakatae by Bristowe and Raath (2004) and Rinehart et al. (2007); it was recombined as Megapnosaurus kayentakatae by Irmis (2004), Milner et al. (2006), Smith and Merrill (2006), Spielmann et al. (2007), Jasinski (2011), Tweet et al. (2012) and Martínez et al. (2013).
Synonymy list
| Year | Name and author |
|---|---|
| 1989 | Syntarsus kayentakatae Rowe |
| 1990 | Syntarsus kayentakatae Rowe and Gauthier p. 152 |
| 1993 | Syntarsus kayentakatae Paul p. 402 |
| 1997 | Syntarsus kayentakatae Rowe et al. p. 108 |
| 1997 | Syntarsus kayentakatae Vickaryous and Ryan p. 488 |
| 1998 | Syntarsus kayentakatae Hunt et al. p. 522 |
| 2003 | Syntarsus kayentakatae Rauhut p. 19 |
| 2004 | Coelophysis kayentakatae Bristowe and Raath p. 39 |
| 2004 | Syntarsus kayentakatae Carrano and Sampson p. 553 fig. 4 |
| 2004 | Megapnosaurus kayentakatae Irmis p. 15 |
| 2004 | Syntarsus kayentakatae Tykoski and Rowe p. 48 |
| 2006 | Megapnosaurus kayentakatae Milner et al. p. 326 |
| 2006 | Megapnosaurus kayentakatae Smith and Merrill pp. 595-597 |
| 2007 | Syntarsus kayentakatae Ezcurra p. 186 |
| 2007 | Syntarsus kayentakatae Ezcurra and Novas p. 36 |
| 2007 | Coelophysis kayentakatae Rinehart et al. p. 175 |
| 2007 | Megapnosaurus kayentakatae Spielmann et al. p. 385 |
| 2009 | Syntarsus kayentakatae Wu et al. p. 14 |
| 2010 | Syntarsus kayentakatae Paulina Carabajal and Canale p. 249 |
| 2011 | Megapnosaurus kayentakatae Jasinski p. 199 |
| 2012 | Megapnosaurus kayentakatae Tweet et al. p. 494 |
| 2013 | Megapnosaurus kayentakatae Martínez et al. p. 73 |
| 2015 | Syntarsus kayentakatae Nesbitt and Ezcurra p. 519 |
| 2016 | Syntarsus kayentakatae Martill et al. p. 10 |
| 2018 | Syntarsus kayentakatae Dal Sasso et al. p. 48 |
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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.
†Syntarsus kayentakatae Rowe 1989
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. S. Paul 1993 | Robust skull, small paired crests, lacrimal bar thick, post temporal fenestra absent, retroarticular process moderately long, teeth fairly large, row of 18 maxillary teeth ends beneath orbit. Distal pubic and ischial expansions relatively large. |