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2. The Late Jurassic-Early Cretaceous worldwide record of basal Titanosauriforms and the origin of Titanosaurians (Sauropoda): New evidence from the Aptian (Lower Cretaceous) of Chubut Province;S Apestegu�a;Journal of Vertebrate Palaeontology,2001
3. Nuevos restos de Stegosauria (Ornithischia, Thyreophora) del Cret�cico Inferior temprano de Neuqu�n: el registro m�s antiguo de Sudam�rica;S Apestegu�a;Ameghiniana,2015