摘要
New vertebrate and invertebrate remains are reported from the basal deposits （marls, sands and gravels） of Papo-Seco Formation （Lower Barremian, Lower Cretaceous） of Areias do Mastro, nearby Cabo Espichel, Sesimbra, south of Lisbon. The studied layers were formed in an environment of shallow-marine features （lagoon, estuary）. Recent paleontological inspection generated several vertebrate and invertebrate remains, including shells and trace fossils （casts and molds） of gastropods and bivalves; after examination, there were identified bones and teeth of fish, crocodiles, dinosaurs, pterosaurs and turtle shell fragments. The new data constitute an important contribution to the knowledge of vertebrate paleo-diversity for the environment during the Lower Cretaceous of Portugal.
