INVESTIGADORES
SALGADO Leonardo
artículos
Título:
Embryonic skulls of titanosaur sauropod dinosaurs
Autor/es:
CHIAPPE, L., SALGADO, L., CORIA, R.A.
Revista:
SCIENCE
Editorial:
Science
Referencias:
Lugar: Estados Unidos; Año: 2001 vol. 293 p. 2444 - 2446
ISSN:
0036-8075
Resumen:
Little is known about the cranial anatomy of the taxonomically diverse and geographically widespread titanosaurs, a paucity that has hindered inferences about the genealogical history and evolutionary development of the latest sauropod dinosaurs. Newly discovered fossil eggs containing embryonic remains from the Late Cretaceous of Argentina provide the Þrst articulated skulls of titanosaur dinosaurs. The nearly complete fetal skulls shed light on the evolution of some of the most notable cranial features of sauropod dinosaurs, including the retraction of the external nares, the forward rotation of the braincase, and the abbreviation of the infraorbital region.
