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Huehuecanauhtlus tiquichensis

Reptilia -

Taxonomy
Huehuecanauhtlus tiquichensis was named by Ramírez-Velasco et al. (2012). Its type specimen is IGM 6253, a partial skeleton, and it is a 3D body fossil. Its type locality is Barranca Los Bonetes (f6), which is in a Santonian terrestrial sandstone in the Cutzamala Formation of Mexico.

Synonymy list
YearName and author
2012Huehuecanauhtlus tiquichensis Ramírez-Velasco et al. p. 384 figs. 3-13
2014Huehuecanauhtlus tiquichensis Ramírez-Velasco et al. p. 344
2016Huehuecanauhtlus tiquichensis Prieto-Márquez et al. p. 6

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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()
RankNameAuthor
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Neornithischia()
Ornithopoda()
Iguanodontia()
Dryomorpha
Ankylopollexia
Styracosterna
Hadrosauriformes
Hadrosauroidea()
genusHuehuecanauhtlus
speciestiquichensis

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. A. Ramírez-Velasco et al. 2012Hadrosauroid dinosaur characterized by the unique combination of the following characters: two teeth exposed on the occlusal plane of the rostral third and the posterior
third of the dentary and maxilla, respectively; seven sacral vertebrae; tall neural spines of posterior vertebrae, being between 3.5 and 4 times taller than their corresponding centra;
supraacetabular process as long as 75% of the length of the central iliac plate, with an apex located above the posteroventral corner of the ischiac tuberosity, as in Claosaurus agilis;
and short and trapezoidal (in lateral view) postacetabular process, with a length that is less than 80% of the length of the iliac central plate. Huehuecanauhtlus tiquichensis differs from other hadrosauroids in possessing an extremely deflected preacetabular process of the ilium, so that the bisecting long axis of the process forms an angle less than 130° with the horizontal plane defined by the ischiac and pubic peduncles. It also differs from basal hadrosauroids in having a very deep concave profile of the dorsomedial margin of the iliac plate, adjacent to the supraacetabular process.
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: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:40:05
Modified: 2009-01-03 22:40:05
Source: subo = suborder, o = order
References: Benton 1983, Marsh 1875

Age range: Santonian or 86.30000 to 83.60000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Santonian86.3 - 83.6Mexico (Michoacán) Hadrosauridae indet. (57046) Huehuecanauhtlus tiquichensis (type locality: 131842)