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Atacamatitan chilensis

Reptilia

Taxonomy
Atacamatitan chilensis was named by Kellner et al. (2011). Its type specimen is SGO-PV-961, a set of postcrania (right femur, the proximal end of a humerus, two dorsal vertebrae, posterior caudal vertebrae, dorsal ribs and a fragmentary element regarded as part of the ster), and it is a 3D body fossil. Its type locality is Conchi Viejo, Atacama, which is in a Cretaceous terrestrial conglomerate/sandstone in the Tolar Formation of Chile. It is the type species of Atacamatitan.

Synonymy list
YearName and author
2011Atacamatitan chilensis Kellner et al. p. 212 figs. 1-4
2012Atacamatitan chilensis Mannion and Otero p. 634
2012Atacamatitan chilensis Rubilar-Rogers et al. p. 247–248
2015Atacamatitan chilensis de Jesus Faria et al. p. 155

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
RankNameAuthor
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Sauropoda()
Gravisauria
Eusauropoda
Neosauropoda
Macronaria
Titanosauriformes
Titanosauria
Lithostrotia
genusAtacamatitan
specieschilensis

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.

Atacamatitan chilensis Kellner et al. 2011
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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
Reference: 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. (type locality: 59975)