[dinosaur] Rinconsaurus "prefrontal" bone is crocodyliform ilium

Subject: [dinosaur] Rinconsaurus "prefrontal" bone is crocodyliform ilium

From: Ben Creisler <bcreisler@gmail.com>

Date: Wed, 21 Apr 2021 10:50:10 -0700

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Ben Creisler

bcreisler@gmail.com

A new paper:

[The issue I was having with posting to DML earlier today seems to be resolved for now...]Â

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Leonardo S. Filippi, Ruben D. Juarez Valieri & Francisco Barrios (2021)
The prefrontal of Rinconsaurus caudamirus (Sauropoda, Titanosauria) as a crocodyliform ilium.
Cretaceous Research 104852
doi: https://doi.org/10.1016/j.cretres.2021.104852
https://www.sciencedirect.com/science/article/abs/pii/S0195667121000999

The holotype of the titanosaur sauropod Rinconsaurus caudamirus, from the Bajo de la Carpa Formation (Santonian, Upper Cretaceous, NeuquÃn Group), is based on an articulated series of 13 anterior-middle to middle posterior caudal vertebrae and two illia, in addition to cranial, axial and appendicular elements corresponding to several individuals. One of the skull elements originally identified as a prefrontal (MAU-Pv-CRS-102), is reinterpreted here as a mesoeucrocodylian right ilium, likely belonging to Pehuenchesuchus enderi, a crocodyliform found in the same quarry. Therefore, this element is excluded from the Rinconsaurus type materials, adding a new element to Pehuenchesuchus and increasing the knowledge of its anatomy.