The Osteology of Chubutisaurus insignis Del Corro, 1975 (Dinosauria: Neosauropoda) from the ‘Middle’ Cretaceous of Central Patagonia, Argentina

By José Luis Carballido, D. Pol, I. Cerda, L. Salgado. 2011

95 citations recorded by the source corpus.

ABSTRACT Titanosauriform sauropods were one of the most widely distributed groups of dinosaurs during the Cretaceous. In contrast to most derived forms from the Upper Cretaceous, the most basal taxa of the group are poorly known. Thus, studies on these forms are of special interest for understanding the origin and early evolution of Titanosauria. Chubutisaurus insignis del Corro, 1975, is known from postcranial remains found in the Bayo Overo Member of the Cerro Barcino Formation (Chubut Group), which is commonly regarded as Aptian—Cenomanian in age. Phylogenetic analyses that include Chubutisaurus recovered this taxon as the sister group to Titanosauria. Nevertheless, most published studies have not included this taxon, probably due to its brief description and fragmentary remains. Fieldwork conducted in the quarry where the holotype was found yielded new materials that are regarded as part of the same specimen. These new materials, together with additional undescribed, and briefly described elements, originally collected by G. del Corro, are described here. The new information allows the recognition of a more extensive diagnosis of this taxon. The phylogenetic analysis presented here resolves Chubutisaurus as the most basal somphospondylian.

Subfields: Paleontology

View Paper: https://www.semanticscholar.org/paper/3e3c1b317354f43045a058646df946d9232e71cc

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Paleontology

Citations in the corpus

Revision of the sauropod dinosaur Diamantinasaurus matildae Hocknull et al. 2009 from the mid-Cretaceous of Australia: Implications for Gondwanan titanosauriform dispersal (2015, background): “As such, Diamantinasaurus differs from titanosaurs (and some derived nontitanosaurian somphospondylans, e.g. Chubutisaurus; Carballido et al., 2011), inwhich this condyle is undivided (D'Emic, 2012).”
A Reappraisal of the Late Cretaceous Argentinean Sauropod Dinosaur Argyrosaurus superbus, with a Description of a New Titanosaur Genus (2012, background): “, 2011], Chubutisaurus [Carballido et al., 2011], Daxiatitan [You et al.”
The early evolution of titanosauriform sauropod dinosaurs (2012, background): “When included, Chubutisaurus and Ligabuesaurus are recovered as non-titanosaur somphospondylans (e.g. González Riga, Previtera & Pirrone, 2009; Royo-Torres, 2009; Carballido et al., 2011a).”
Postcranial axial skeleton of Europasaurus holgeri (Dinosauria, Sauropoda) from the Upper Jurassic of Germany: implications for sauropod ontogeny and phylogenetic relationships of basal Macronaria (2014, methodology): “Nevertheless, at least a few examples do not seem to follow this pattern (e.g. McIntosh et al. 1996; Carballido et al. 2011b).”
Osteology of the Late Jurassic Portuguese sauropod dinosaur Lusotitan atalaiensis (Macronaria) and the evolutionary history of basal titanosauriforms (2013, methodology): “Wintonotitan, from the early Late Cretaceous of Australia has previously been recovered as a nontitanosaurian somphospondylan (Hocknull et al., 2009; Carballido et al., 2011a), a non-titanosauriform macronarian (Carballido et al.”
A new basal rebbachisaurid (Sauropoda, Diplodocoidea) from the Early Cretaceous of the Neuquén Basin; evolution and biogeography of the group (2012, background): “Robustness indices of approximately 0.3 are commonly found in nonneosauropod sauropods (e.g., Cetiosaurus; Upchurch and Martin 2003) and basal macronarians (e.g., Camarasaurus, Tehuelchesaurus; Wilson and Upchurch 2003; Carballido et al. 2011b).”