A nearly complete skeleton of one of the smallest dinosaurs, Alnashetri cerropoliciensis, was found in Argentina's Patagonia. This crow-sized dinosaur offers insight into the alvarezsaurs group and demonstrates the diverse ecosystem of the Cretaceous Period. It reflects how size reduction evolved multiple times in dinosaur lineages. In the heart of Argentina's Patagonia, a remarkable discovery has been made: the nearly complete skeleton of Alnashetri cerropoliciensis, one of the world's tiniest-known dinosaurs. Unearthed from a sandstone site in Rio Negro Province, this crow-siz... [916 chars]