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Atacamatitan

Reptilia - Titanosauridae

Taxonomy
Atacamatitan was named by Kellner et al. (2011). Its type is Atacamatitan chilensis. It was considered monophyletic by Kellner et al. (2011).

It was assigned to Titanosauridae by Kellner et al. (2011); and to Lithostrotia by Rubilar-Rogers et al. (2012).

Synonymy list
YearName and author
2011Atacamatitan Kellner et al. p. 212
2012Atacamatitan Rubilar-Rogers et al. p. 247–248 fig. 4

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
RankNameAuthor
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Eusaurischia
Sauropodomorpha(Huene 1932)
Massopoda
Sauropodiformes
Sauropoda()
Eusauropoda
Neosauropoda
Macronaria
Titanosauriformes
Somphospondyli
Titanosauria
familyTitanosauridae
EutitanosauriaSanz et al. 1999
Lithostrotia
genusAtacamatitan

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
ReferenceDiagnosis
A. W. A. Kellner et al. 2011Titanosaurid dinosaur with the following combination of characters that distinguishes it from other members of this clade (autapomorphies are marked with an asterisk): centrum of dorsal vertebrae pierced by pleurocoels, which are rounded or elliptical but do not acuminate posteriorly*; ventral surface of the dorsal vertebra strongly concave*; posterior caudals with a laterally compressed neural spine that bears a blade-like anterior margin*; femur with the shaft getting gradually narrower until two thirds of its length*
Measurements
No measurements are available
Composition: hydroxyapatiteinfrao
Entire body: yesinfrao
Adult length: 10 to < 100infrao
Adult width: 10 to < 100infrao
Adult height: 10 to < 100infrao
Thickness: thickinfrao
Architecture: compact or denseinfrao
Form: sphericalinfrao
Ontogeny: accretion, modification of partsinfrao
Grouping: gregariousinfrao
Environment: terrestrialinfrao
Locomotion: actively mobileinfrao
Life habit: ground dwellinginfrao
Diet: herbivoreinfrao
Reproduction: oviparousinfrao
Dispersal: direct/internalinfrao
Dispersal 2: mobileinfrao
Created: 2004-12-14 12:49:10
Modified: 2004-12-14 14:49:10
Source: infrao = infraorder
References: Kiessling 2004, Marsh 1875

Age range: Late/Upper Cretaceous or 100.50000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Cretaceous100.5 - 66.0Chile (Antofagasta) Titanosauridae indet. (59975)