Aeolosaurus Powell 1987

Aeolosaurus Powell, 1987 Type species. Aeolosaurus rionegrinus Powell, 1987 Geographical and stratigraphical range. R��o Negro and Chubut provinces, Argentina, Allen, Angostura Colorada, Bajo Barreal, and Los Alamitos formations; and S��o Paulo and Minas Gerais states, Brazil, Adamantina and Mar��lia formations. Emended diagnosis. Titanosaur with the following unique association of characters: prezygapophyses curved downward on anterior caudal vertebrae and haemal arches with double articular facets set in a concave posterodorsal surface on anterior and middle caudal vertebrae. Comments. In the description of Aeolosaurus rionegrinus, Powell (1986, 1987, 2003) mentioned several characteristics that, according to him, would be the autapomorphies of that species. With the description of a new Aeolosaurus species from Argentina (Casal et al., 2007) and the proposal of the clade Aeolosaurini by Franco-Rosas et al. (2004), many of the autapomorphies of A. rionegrinus became the synapomorphies of the genus Aeolosaurus or of the clade Aeolosaurini, which also comprises the Brazilian titanosaur Gondwanatitan. Additionally, many of the appendicular features seen in A. rionegrinus cannot be assessed in these other taxa due to preservation problems. Since only the anterior and middle caudal vertebrae and the haemal arches are preserved in nearly all aeolosaurines known to date, we decided to constrain the diagnosis of the genus to these elements until more complete material are available in order to avoid creating ambiguous characteristics.
Published as part of Santucci, Rodrigo M. & De, Antonio C., 2011, A new sauropod (Macronaria, Titanosauria) from the Adamantina Formation, Bauru Group, Upper Cretaceous of Brazil and the phylogenetic relationships of Aeolosaurini, pp. 1-33 in Zootaxa 3085 on page 5, DOI: 10.5281/zenodo.205522
{"references":["Powell, J. E. (1987) The Late Cretaceous fauna of Los Alamitos, Patagonia, Argentina. Part VI. The titanosaurids. Revista del Museo Argentino de Ciencias Naturales ' Bernardino Rivadavia', 3, 147 - 153.","Powell, J. E. (1986) Revision de los titanosauridos de America del Sur. PhD Dissertation, Universidad Nacional de Tucuman, Argentina, 340 pp.","Powell, J. E. (2003) Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum, 111, 173 pp.","Casal, G., Martinez, R. D., Luna, M., Sciutto, J. C. & Lamanna, M. C. (2007) Aeolosaurus colhuehuapensis sp. nov. (Sauropoda, Titanosauria) de la Formacion Bajo Barreal, Cretacico superior de Argentina. Revista Brasileira de Paleontologia, 10, 53 - 62.","Franco-Rosas, A. C., Salgado, L., Rosas, C. F. & Carvalho, I. S. (2004) Nuevos materiales de titanosaurios (Sauropoda) en el Cretacico Superior de Mato Grosso, Brasil. Revista Brasileira de Paleontologia, 7, 329 - 336."]}