New Dinosaur Tracks from the Lower Barremian of Portugal (Areia do Mastro Formation, Cape Espichel)

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