Alexis Mauro Aranciaga RolandoMuseo Argentino de Ciencias Naturales "Bernardino Rivadavia" · laboratorio de anatomía comparada y evolución de los vertebrados
Alexis Mauro Aranciaga Rolando
Gen. et. sp. indet.
About
30
Publications
27,086
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
367
Citations
Introduction
Publications
Publications (30)
The deposits of the Chorrillo Formation (Maastrichtian) were accumulated during a ‘continental window’ that occurred during the Late Cretaceous in the Austral-Magallanes foreland basin, southern Patagonia, Argentina. The aim of the present contribution is to describe the depositional conditions as well as new vertebrate and plant fossils from this...
The record of sauropods in the Upper Cretaceous of Patagonia is rich. However, there are still several blanks on this record. Here it is described a new sauropod assemblage coming from the Salitral Ojo de Agua Area, Río Negro province, northern Patagonia, Argentina (Allen Formation; Maastrichtian). Remains of indeterminate saltasaurines, aeolosauri...
Abelisaurid theropods are well known in Cretaceous beds along South America, particularly Patagonia. However, the record of latest Cretaceous abelisauroids is still far from satisfactory. Until recently, few taxa were described from Maastrichtian beds: Carnotaurus sastrei and Quilmesaurus curriei, but also perhaps Abelisaurus comahuensis. In this c...
In this article we investigate the contributions made by the art professor Alejandro Gavriloff (1914-1993), based on his artistic work which illustrated scientifc publications in the feld of natural sciences and natural history. In particular, we present the seven paintings in watercolors made by him that show representation sofliving fauna based on...
Aoniraptor libertatem is a mid‐sized megaraptoran that comes from the Late Cretaceous (Turonian) Huincul Formation at Río Negro province, Patagonia, Argentina. In this study, we conducted a detailed analysis of pneumaticity of the sacrum and tail of Aoniraptor . This shows a complex structure within these vertebrae, being composed by small divertic...
The first fossil remains of vertebrates, invertebrates, plants and palynomorphs of the Chorrillo Formation (Austral Basin), about 30km to the SW of the town of El Calafate (Province of Santa Cruz), are described. Fossils include the elasmarian (basal Iguanodontia) Isasicursor santacrucensis gen. et sp. nov., the large titanosaur Nullotitan glaciari...
The aim of the present contribution is to describe a new genus and species of Pipoidea from the Huitrera Formation (Eocene) from Patagonia, Argentina. The new genus shows a unique combination of characters indicating that it is a valid taxon different from other pipimorphs, including the coeval Llankibatrachus truebae. The phylogenetic analysis res...
Phylogenetic relationships of megaraptorid theropods are under intense debate. Some authors interpret them as archaic allosauroids that survived up to Late Cretaceous, whereas others consider megaraptorids as basal tyrannosauroids. The recently described Patagonian taxon Murusraptor barrosaensis offers novel information on skull, axial and hind lim...
Pipimorpha is a clade of tongueless anurans with a wide fossil record.
Furthermore, the oldest South American fossils come from the Late Cretaceous (Cenomanian) of Patagonia, Argentina. The aim of the present contribution is to describe a new genus and species of Pipimorpha from the Crato Formation (Aptian, Early Cretaceous), Araripe Basin, Brazil....
A specimen composed of a partial sacrum articulated to two anterior caudal vertebrae and an ilium (SMNS 58023) from the Lower Cretaceous (Albian) Santana Formation of Brazil was originally described as an oviraptorosaur, but it is here re-interpreted as the oldest megaraptoran of South America. The phylogenetic relationships of SMNS 58023 were test...
Neuquenraptor argentinus was described as the first undoubted deinonychosaurian theropod from Gondwana. The only known specimen is represented by a fragmentary skeleton, including a nearly complete foot, coming from Late Cretaceous beds of Neuquén Province, Patagonia, Argentina. Neuquenraptor was later considered as belonging to the Southern Hemisp...
Novas, F.E., Aranciaga Rolando, A.M. and Agnolín, F.L. 2016. Phylogenetic relationships of the Cretaceous Gondwanan theropods Megaraptor and Australovenator: the evidence afforded by their manual anatomy. Memoirs of Museum Victoria 74: 49–61. General comparisons of the manual elements of megaraptorid theropods are conducted with the aim to enlarge...
The present contribution describes theropod remains coming from the Huincul Formation (Neuquén Group; Cenomanian-Turonian; Upper Cretaceous) at a single locality located in northwestern Río Negro province, Patagonia, Argentina. This theropod association is composed of abelisauroids, two different-sized carcharodontosaurid allosauroids, a coelurosau...
TALAMPAYA NATIONAL PARK, PROVINCE OF LA RIOJA, ARGENTINA. In this paper disclosed two new records
of Crowned Eagle (Buteogallus coronatus) for the Talampaya National Park, La Rioja Province. The first record for the month
of May 2013 consists of a pair of adult individuals, with a chick and the second in October 2014 of an adult and a nest. These
r...
Dentro de Sudamérica uno de los grupos de dinosaurios mejor representados es el de los terópodos. Dentro del continente, Patagonia posee uno de los registros más ricos de este grupo, tanto en abundancia como en diversidad. La nueva localidad se encuentra al noroeste de la provincia de Rio negro, Argentina, y cuenta con afloramientos de la Formación...
Dentro de las escasas especies de ornitisquios registradas para Gondwana, Ornithopoda es el clado mejor conocido. En Patagonia y Antártida muchos de los representantes basales de este clado muestran características anatómicas en común, que sugieren su pertenencia a un clado monofilético. Talenkauen santacrucensis es un taxón representado por uno de...
Megaraptorans is a clade known from Cretaceous strata from South America, Australia and Asia. Here we describe an incomplete foot and one right metatarsal III belonging to the same individual (Museo de Ciencias Naturales y Antropológicas Juan Cornelio Moyano, Mendoza; MCNA-PV-3138), coming from the Anacleto Formation, Neuquen Group (Santonian, Late...
El presente trabajo consiste en un análisis anatómico detallado del miembro anterior de
Megaraptor namunhuaiquii (MUCPv 595, MUCPv 1353 y MUCPv 341) un terópodo de 8
metros de largo proveniente del Cretácico Superior (Turoniano) de la provincia de
Neuquén. Sus relaciones filogenéticas y la de especies cercanas son objeto de debate. Un
exhaustivo an...
En la siguiente presentación se dan a conocer datos adicionales acerca de un nuevo dinosaurio Iguanodontia. Los materiales aquí descriptos (MACN Pv-19777) consisten en un ejemplar compuesto por un miembro posterior izquierdo parcialmente conservado. Dichos materiales proceden de la Isla James Ross de la Antártida Argentina, y fueron recuperados en...
