being restudied. Most of the referred specimens were considered indeterminate titanosaurs. They also considered one of the referred specimens, the partial skeleton PLV 4628/MACN-CH 217, to be its own genus which they called Elaltitan. The genus name means 'silver lizard' from Greek argyros, 'silver', and sauros, 'lizard', because it was discovered in Argentina, which literally means 'silver land'. The specific epithet means "proud" in Latin. Description Argyrosaurus was a medium-sized sauropod which is estimated to measure long and weighing up to according to Paul. However, in 2012 Thomas Holtz gave a higher estimation at in length and a possible weight of 43.5-50.8 tonnes (48-56 short tons). More recently it was listed at and 26 tonnes (28.6 short tons). It is distinguished from other genera by particularly high and short vertebral arches. Ulna and radius were robust, the metacarpal bones were long as with representatives of the Macronaria. Humerus shows a rectangular upper end, similar to the titanosaurs Saltasaurus and Opisthocoelicaudia. An important feature that confirms the classification within the Titanosauria is a pronounced bone spike at the upper end of ulna. References External links An image of Argyrosaurus Artist's impression of Argyrosaurus, with scaled holotype forelimb Lithostrotians Late Cretaceous dinosaurs of South America Cretaceous Argentina Fossils of Argentina Golfo San Jorge Basin Fossil taxa described in 1893 Taxa named by Richard Lydekker