[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Giant titanosaur tooth from Argentina

From: Ben Creisler

A new online paper that coincides with the recent news story about the
basicranium of a giant titanosaur also found in Argentina:

Rodolfo A. García (2012)
A giant tooth from the Late Cretaceous (middle Campanian–lower
Maastrichtian) of Patagonia, Argentina: An enormous titanosaur or a
large toothed titanosaur?
Cretaceous Research (advance online publication)

The tooth MML-Pv 1030 comes from the Upper Cretaceous (middle
Campanian–lower Maastrichtian) strata of the Allen Formation at
Salitral de Santa Rosa, Río Negro, Argentina and is the biggest
titanosaur tooth yet described. The specimen is a cylindrical
chisel-like tooth, its length is 75 mm, mesiodistally 15 mm and
labiolingually 11 mm. The wear facet is single on the lingual side of
the tooth, which has an oval outline with a low angle (10°) with
respect to the axial axis of the tooth. This tooth is 32% greater in
length than the longest tooth registered in a titanosaurid
(Nemegtosaurus), and twice the tooth size of taxa as Tapuiasaurus,
Bonitasaura and Pitekunsaurus. Detailed descriptions of the tooth
morphology and a highlight of comparative relationships among known
titanosaur teeth are provided. Finally, different aspects are
suggested related to morphology and feeding behavior.