Alexis M. Aranciaga Rolando's research while affiliated with Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" and other places

Publications (4)

Article
Full-text available
Megaraptora is a theropod clade known from former Gondwana landmasses and Asia. Most members of the clade are known from the Early to Late Cretaceous (Barremian–Santonian), with Maastrichtian megaraptorans known only from isolated and poorly informative remains. The aim of the present contribution is to describe a partial skeleton of a megaraptorid...
Preprint
Full-text available
Megaraptorans are a theropod clade distributed in former Gondwana landmasses and Asia. Most members of the clade are known from early Cretaceous to Turonian times whereas Maastrichtian megaraptorans are known just from isolated and poorly informative remains. The aim of present contribution is to describe a partial skeleton of a megaraptorid coming...
Article
Full-text available
Carcharocles megalodon is considered a macropredatory shark that inhabited the seas around the world from middle Miocene to late Pliocene. In Argentina, it has only been formally recorded at two localities. Here, we report the first record for this taxon in the Buenos Aires Province. This occurrence is based on an isolated tooth recovered on the be...
Article
Aerosteon riocoloradensis represents one of the most complete megaraptorans yet discovered. This theropod comes from Anacleto Formation (Campanian) of Mendoza Province, Argentina. The aims of this contribution are: to present a detailed, bone by bone description of this specimen with figures of each bone; provide comparisons to other closely relate...

Citations

... In this context, the Chorrillo Formation (Feruglio, 1945) provides an important source of information for analyzing a Maastrichtian terrestrial community. Recent studies have revealed a highly diverse fossil assemblage preserved in this formation, containing snails, fish, anurans, turtles, snakes, sauropods, theropods, ornithischians, and mammals, as well as palynomorphs, woods and leaf impressions (e.g., Novas et al., 2019;Moyano-Paz et al., 2022a;Rozadilla et al., 2021;Chimento et al., 2020Chimento et al., , 2021Aranciaga Rolando et al., 2022). The diversity of clades in the Chorrillo Formation not only provides a unique opportunity for analyzing a Maastrichtian paleoflora, but also enables comparison of patterns in changes between floral and zoological diversity in the unit. ...
... Only three caudal vertebrae are currently known for Maip macrothorax, and all are from the proximal third of the tail, thereby enabling comparison with the proximal caudals of Megaraptor namunhuaiquii 10 , Orkoraptor burkei 35 , and Aerosteon riocoloradensis 14,34 . The holotype of Maip macrothorax also preserves several ribs tentatively referred as cervical ribs 5, 7 and 8 (Fig. 10), and dorsal ribs 1, 2, and 6, as well as many other indeterminate rib fragments (Fig. 11). ...