Andesaurus

An-deez-sore-us.
Published on

Benjamin Gutierrez

Vertebrate Paleontologist

Benjamin Gutierrez is a leading expert on dinosaurs, particularly the mighty theropods. His fieldwork in South America has uncovered new species and provided insights into dinosaur social structures.

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Name

Andesaurus ‭(‬Andes lizard‭).

Phonetic

An-deez-sore-us.

Named By

Jorge O.‭ ‬Calvo and Jose F.‭ ‬Bonaparte‭ ‬-‭ ‬1991.

Classification

Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Sauropodomorpha,‭ ‬Sauropoda,Titanosauria.

Diet

Herbivore.

Species

A.‭ ‬delgadoi‭

Size

About 15 to 18 meters long.

Known locations

Argentina,‭ ‬Neuquen Province‭ ‬-‭ ‬Candeleros Formation.

Time Period

Cenomanian of the Cretaceous.

Fossil representation

Partial post cranial remains including vertebrae and fragments of the pelvis,‭ ‬ribs and hind limbs.

In Depth

       Named after the Andes Mountains,‭ ‬Andesaurus was a titanosaurian sauropod dinosaur from South America,‭ ‬but one known from only incomplete remains.‭ ‬This makes it hard to be certain about such things as a total size or even a preferred diet beyond just general plants.‭ ‬The vertebrae of Andesaurus though suggest that the genus was a basal‭ (‬primitive‭) ‬titanosaur.

       Hailing from the Candeleros Formation,‭ ‬Andesaurus may have lived alongside the rebbachisaurid sauropods Limaysaurus and Nopcsaspondylus.‭ ‬Other dinosaurs active here include dromaeosaurids like Buiteraptor and alvaersaurids like Alnashetri.‭ ‬The dinosaurs of most concern to Andesaurus however would have been large abelisaurs like Ekrixinatosaurus,‭ ‬to even bigger carcharodontosaurids like Giganotosaurus,‭ ‬either one of these were capable of taking down a moderately sized sauropod.

Further Reading

-‭ [‬Andesaurus delgadoi n.‭ ‬g.‭ ‬n.‭ ‬sp.‭ (‬Saurischia,‭ ‬Sauropoda‭) ‬a titanosaurid dinosaur from the R�o Limay Formation‭ (‬Albian-Cenomanian‭)‬,‭ ‬Neuqu�n,‭ ‬Argentina.‭]‬,‭ ‬Jorge O.‭ ‬Calvo and Jose F.‭ ‬Bonaparte‭ ‬-‭ ‬1991.- Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian–early Cenomanian) R�o Limay Formation, Neuqu�n Province, Argentina: implications for titanosaur systematics. – Zoological Journal of the Linnean Society. 153: 1–27. – P. D. Mannion & J. O. Calvo – 2011.

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