Muyelensaurus

Muyelensaurus (meaning "Muyelen lizard", after an indigenous name for the Colorado River in Argentina) is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous of Argentina. It was more slender than other titanosaurs. Fossils have been recovered from the Plottier Formation in the Neuquén province of Patagonia. The type species is "M. pecheni". The name "Muyelensaurus" first appeared in a 2007 paper by Argentine paleontologists Jorge Calvo of the Universidad Nacional del Comahue and Bernardo González Riga of the Laboratorio de Paleovertebrados, and Brazilian paleontologist Juan Porfiri of the Universidade Federal do Rio de Janeiro.
Classification.
The cladogram below follows Franca "et al." (2016), placing "Muyelensaurus" as a basal lithostrotian.
The cladogram below follows Mocho "et al." (2019), this time placing "Muyelensaurus" within Rinconsauria.