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Mapusaurus
Taxonomy
Mapusaurus was named by Coria and Currie (2006). It is not extant.
It was assigned to Giganotosaurinae by Coria and Currie (2006); to Carcharodontosaurinae by Brusatte et al. (2009), Carrano et al. (2012); to Giganotosaurini by Canale et al. (2013), Novas et al. (2013), Csiki-Sava et al. (2016); and to Carcharodontosauridae by Porfiri et al. (2007), Brusatte and Sereno (2007), Sereno et al. (2008), Smith et al. (2008), Candeiro et al. (2012), Furtado et al. (2013), Bell and Coria (2013), Hendrickx and Mateus (2014), Motta et al. (2016).
It was assigned to Giganotosaurinae by Coria and Currie (2006); to Carcharodontosaurinae by Brusatte et al. (2009), Carrano et al. (2012); to Giganotosaurini by Canale et al. (2013), Novas et al. (2013), Csiki-Sava et al. (2016); and to Carcharodontosauridae by Porfiri et al. (2007), Brusatte and Sereno (2007), Sereno et al. (2008), Smith et al. (2008), Candeiro et al. (2012), Furtado et al. (2013), Bell and Coria (2013), Hendrickx and Mateus (2014), Motta et al. (2016).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Mapusaurus Coria and Currie p. 74 |
| 2007 | Mapusaurus Brusatte and Sereno p. 914 |
| 2007 | Mapusaurus Porfiri et al. p. 547 |
| 2008 | Mapusaurus Sereno et al. p. 3 |
| 2008 | Mapusaurus Smith et al. p. 2089 |
| 2009 | Mapusaurus Brusatte et al. p. 1055 fig. 3 |
| 2012 | Mapusaurus Candeiro et al. p. 328 |
| 2012 | Mapusaurus Carrano et al. p. 267 |
| 2013 | Mapusaurus Bell and Coria p. 1 |
| 2013 | Mapusaurus Canale et al. |
| 2013 | Mapusaurus Furtado et al. p. 110 |
| 2013 | Mapusaurus Novas et al. p. 184 |
| 2014 | Mapusaurus Hendrickx and Mateus |
| 2016 | Mapusaurus Csiki-Sava et al. p. 233 |
| 2016 | Mapusaurus Motta et al. p. 231 |
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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 | |
|---|---|---|
| R. A. Coria and P. J. Currie 2006 | Mapusaurus n. gen. is a carcharodontosaurid theropod whose skull differs from Giganotosaurus in having thick, rugose unfused nasals that are narrower anterior to nasal/maxilla/lacrimal junction; larger extension of antorbital fossa onto maxilla; smaller maxillary fenestra; wider bar (interfenestral strut) between antorbital and maxillary fenestrae; lower, flatter lacrimal horn; transversely wider prefrontal in relation to lacrimal width; ventrolaterally curving lateral margin of palpebral; shallower interdental plates; higher position of Meckelian canal; more posteriorly sloping anteroventral margin of dentary. Mapusaurus roseae n. gen., n. sp. is unique in that upper quadratojugal process of jugal splits into two prongs; small anterior mylohyoid foramen positioned above dentary contact with splenial; second and third metacarpals fused; humerus with broad distal end and little separation between condyles; brevis fossa of ilium extends deeply into excavation dorsal to ischial peduncle. It also differs from Giganotosaurus in having conical, slightly curving cervical epipophyses that taper distally; axial posterior zygapophyses joined on midline; smaller and less elaborate prespinal lamina on midline of cervicals; remarkably sharp dorsal margin of cervical neural spines; taller, wider neural spines; curved ischiatic shaft; more slender fibula.
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