PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Aucasaurus

Reptilia - Theropoda - Abelisauridae

Taxonomy

Aucasaurus was named by Coria et al. (2002). It is not extant. Its type is Aucasaurus garridoi.

It was assigned to Carnotaurinae by Tykoski and Rowe (2004), Juárez Valieri and Fiorelli (2004) and Juárez Valieri et al. (2007); to Carnotaurini by Coria et al. (2002), Candeiro and Martinelli (2005), Coria et al. (2006), Juárez Valieri et al. (2011) and Tortosa et al. (2014); to Abelisaurinae by Filippi et al. (2016); to Abelisauridae by Coria and Arcucci (2004), Novas et al. (2004), Martínez and Novas (2006), Novas et al. (2006), Smith (2007), Sampson and Witmer (2007), Carrano and Sampson (2008), Maganuco et al. (2008), Smith et al. (2010), Novas et al. (2010), Agnolin and Chiarelli (2010), Paulina Carabajal (2011), Ruiz et al. (2011), Candeiro and Harris (2012), Candeiro et al. (2012), Furtado et al. (2013), Hendrickx and Mateus (2014), Gianechini et al. (2015) and Ratsinbaholison et al. (2016); to Furileusauria by Delcourt (2018); and to Brachyrostra by Canale et al. (2008), Ezcurra et al. (2010), Novas et al. (2013) and Baiano et al. (2023).

Species

A. garridoi (type species)

Synonymy list

Year	Name and author
2002	Aucasaurus Coria et al.
2004	Aucasaurus Coria and Arcucci p. 600
2004	Aucasaurus Juárez Valieri and Fiorelli p. 36
2004	Aucasaurus Novas et al. p. 68
2004	Aucasaurus Tykoski and Rowe p. 49
2005	Aucasaurus Candeiro and Martinelli p. 9
2006	Aucasaurus Coria et al. pp. 1287-1288 fig. 6
2006	Aucasaurus Martínez and Novas p. 247
2006	Aucasaurus Novas et al. p. 63
2007	Aucasaurus Juárez Valieri et al. p. 62
2007	Aucasaurus Sampson and Witmer p. 33
2007	Aucasaurus Smith p. 103
2008	Aucasaurus Canale et al.
2008	Aucasaurus Carrano and Sampson pp. 199-200 fig. 4
2008	Aucasaurus Maganuco et al. p. 245
2010	Aucasaurus Agnolin and Chiarelli p. 297
2010	Aucasaurus Ezcurra et al. p. 14 fig. 8
2010	Aucasaurus Novas et al. p. 54
2010	Aucasaurus Smith et al. p. 928
2011	Aucasaurus Juárez Valieri et al. p. 167
2011	Aucasaurus Paulina Carabajal p. 793
2011	Aucasaurus Ruiz et al. p. 1271
2012	Aucasaurus Candeiro et al. p. 326
2012	Aucasaurus Candeiro and Harris p. 76
2013	Aucasaurus Furtado et al. p. 109
2013	Aucasaurus Novas et al. p. 182
2014	Aucasaurus Hendrickx and Mateus
2014	Aucasaurus Tortosa et al. p. 71
2015	Aucasaurus Gianechini et al.
2016	Aucasaurus Filippi et al. p. 217 fig. 9
2016	Aucasaurus Ratsinbaholison et al. p. 281
2018	Aucasaurus Delcourt p. 3
2023	Aucasaurus Baiano et al. p. 5

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia

Rank	Name	Author
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
order	Theropoda
suborder	Ceratosauria	()
family	Abelisauridae
—	Brachyrostra
genus	Aucasaurus

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. †Aucasaurus Coria et al. 2002

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†Aucasaurus garridoi Coria et al. 2002

Diagnosis

Reference	Diagnosis
M. A. Baiano et al. 2023	As for the species.

Measurements

No measurements are available

Composition:

hydroxyapatiteo

Entire body:

yeso

Adult length:

10 to < 100o

Adult width:

1.0 to < 10o

Adult height:

1.0 to < 10o

Architecture:

compact or denseo

Ontogeny:

accretion, modification of partso

Grouping:

solitaryo

Environment:

terrestrialo

Locomotion:

actively mobileo

Life habit:

ground dwellingo

Diet:

carnivoreo

Reproduction:

oviparouso

Dispersal:

direct/internalo

Dispersal 2:

mobileo

Created:

2004-12-14 12:50:08

Modified:

2004-12-14 14:50:08

Source: o = order

Reference: Marsh 1875

Age range: base of the Early/Lower Campanian to the top of the Middle Campanian or 83.50000 to 70.60000 Ma

Collections (2 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Campanian - Middle Campanian	83.5 - 70.6	Argentina (Neuquén)	Abelisauridae indet. (28461) Theropoda indet. (61458)