We present a new tracksite with multiple dinosaur tracks from the lowermost Barremian (Lower Cretaceous) of the Cape Espichel (Sesimbra, Portugal). The tracks are localized on three beds on the top carbonate beds of t...We present a new tracksite with multiple dinosaur tracks from the lowermost Barremian (Lower Cretaceous) of the Cape Espichel (Sesimbra, Portugal). The tracks are localized on three beds on the top carbonate beds of the Areia do Mastro Formation. Those bioclastic, nodular limestones were deposited in a very shallow subtidal-intertidal, restricted lagoon environment. The track surfaces are very dinoturbated, with a substantial number of tracks. Several tracks assign to sauropods, ornithopods and theropods dinosaurs were recorded. Due to heavy bioturbation and the preservation conditions, it is not possible to define trackways;some preliminary work done on the tracks could disclose some behaviours of their producers. Several species of carnivore and herbivore dinosaurs crossed that large area at different times. Herbivores may have used the lagoon margin as passage between feeding spots, while carnivores frequented the area to hunt in groups or individually.展开更多
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, Sesimbr...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.展开更多
文摘We present a new tracksite with multiple dinosaur tracks from the lowermost Barremian (Lower Cretaceous) of the Cape Espichel (Sesimbra, Portugal). The tracks are localized on three beds on the top carbonate beds of the Areia do Mastro Formation. Those bioclastic, nodular limestones were deposited in a very shallow subtidal-intertidal, restricted lagoon environment. The track surfaces are very dinoturbated, with a substantial number of tracks. Several tracks assign to sauropods, ornithopods and theropods dinosaurs were recorded. Due to heavy bioturbation and the preservation conditions, it is not possible to define trackways;some preliminary work done on the tracks could disclose some behaviours of their producers. Several species of carnivore and herbivore dinosaurs crossed that large area at different times. Herbivores may have used the lagoon margin as passage between feeding spots, while carnivores frequented the area to hunt in groups or individually.
文摘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.
