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New dinosaur-bearing site from Upper Triassic of Brazil



Ben Creisler
bcreisler@gmail.com

A new online paper:

Rodrigo Temp Müller, Átila Augusto Stock da Rosa, Lúcio Roberto da
Silva, Alex Sandro Schiller Aires, Cristian Pereira Pacheco, Ane Elise
Branco Pavanatto & Sérgio Dias-da-Silva (2014)
Wachholz, A new exquisite dinosaur-bearing fossiliferous site from the
Upper Triassic of southern Brazil.
Journal of South American Earth Sciences (advance online publication)
doi:10.1016/j.jsames.2014.10.009
http://www.sciencedirect.com/science/article/pii/S0895981114001552


Highlights

We describe a new dinosaur-bearing fossiliferous site from the
Caturrita Formation.

It yielded complete and exceptionally well-preserved dinosaurs.

This is remarkable due to the worldwide scarcity of complete early
Norian dinosaurs.

The new site comprises at least four sauropodomorphs.

In addition, a new taxonomic record is proposed based on an
archosauriform tooth.

Abstract

The present contribution reports a new fossiliferous site from the
Caturrita Formation (Upper Triassic of Paraná Basin, Southern Brazil),
which yields articulate, complete, associated, and exceptionally
well-preserved dinosaur specimens, together with the sole occurrence
of an isolated tooth ascribed to a carnivore indetermined
archosauriform. These specimens increase the sauropodomorph record
from this geological unit. A preliminary evaluation of such specimens
suggests that sauropodomorph dinosaurs could have been more abundant
in Norian Faunas from southern Brazil, considering the increased
sampling here reported. So far, about six specimens are previously
recognized (disregarding Guaibasaurus) from the Caturrita Formation,
and here we add four specimens, or even five if consider an additional
autopodium. Also, the morphology of the isolated carnivorous-type
tooth differs from other described carnivorous archosauriform teeth
from the Caturrita Formation. Hence, it might represent a still
undescribed taxon. Further studies of these specimens will certainly
provide new data regarding biostratigraphy, phylogeny, paleoecology,
and taphonomy, as this new fossiliferous locality preserves one of the
most representative dinosaur records from the Norian worldwide.