A Gigantic, Exceptionally Complete Titanosaurian Sauropod Dinosaur from Southern Patagonia, Argentina

Authors
Lacovara, Kenneth J.; Lamanna, Matthew C.; Ibiricu, Lucio Manuel; Poole, Jason C.; Schroeter, Elena R.; Ullmann, Paul V.; Voegele, Kristyn K.; Boles, Zachary M.; Carter, Aja M.; Fowler, Emma K.; Egerton, Victoria M.; Moyer, Alison E.; Coughenour, Christopher L.; Schein, Jason P.; Harris, Jerald D.; Martínez, Ruben D.; Novas, Fernando Emilio
Publication Year
2014
Language
English
Format
article
Status
Published version
Description
Titanosaurian sauropod dinosaurs were the most diverse and abundant large-bodied herbivores in the southern continents during the final 30 million years of the Mesozoic Era. Several titanosaur species are regarded as the most massive land-living animals yet discovered; nevertheless, nearly all of these giant titanosaurs are known only from very incomplete fossils, hindering a detailed understanding of their anatomy. Here we describe a new and gigantic titanosaur, Dreadnoughtus schrani, from Upper Cretaceous sediments in southern Patagonia, Argentina. Represented by approximately 70% of the postcranial skeleton, plus craniodental remains, Dreadnoughtus is the most complete giant titanosaur yet discovered, and provides new insight into the morphology and evolutionary history of these colossal animals. Furthermore, despite its estimated mass of about 59.3 metric tons, the bone histology of the Dreadnoughtus type specimen reveals that this individual was still growing at the time of death.
Fil: Lacovara, Kenneth J. . Drexel University. Earth and Environmental Science; Estados Unidos
Fil: Lamanna, Matthew C. . Carnegie Museum of Natural History. Section of Vertebrate Paleontology; Estados Unidos
Fil: Ibiricu, Lucio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Poole, Jason C. . Drexel University; Estados Unidos
Fil: Schroeter, Elena R. . Drexel University; Estados Unidos
Fil: Ullmann, Paul V. . Drexel University; Estados Unidos
Fil: Voegele, Kristyn K. . Drexel University; Estados Unidos
Fil: Boles, Zachary M. . Drexel University; Estados Unidos
Fil: Carter, Aja M. . Drexel University; Estados Unidos
Fil: Fowler, Emma K. . Drexel University; Estados Unidos
Fil: Egerton, Victoria M. . University Of Manchester; Reino Unido
Fil: Moyer, Alison E. . University Of North Carolina; Estados Unidos
Fil: Coughenour, Christopher L. . University Of Pittsburgh at Johnstown; Estados Unidos
Fil: Schein, Jason P. . New Jersey State Museum; Estados Unidos
Fil: Harris, Jerald D.. Dixie State College; Estados Unidos
Fil: Martínez, Ruben D.. Universidad Nacional de la Patagonia San Juan Bosco. Laboratorio de Paleovertebrados; Argentina
Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Subject
Paleontología
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Access level
Open access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/8422