A quantitative taphonomic analysis were performed in the fossil assemblages of the late Tortonian of the
lower-mid part of the Cacela Formation (Cacela, Algarve, S Portugal). Taphonomic results, together with
sedimentological analysis and the faunal assemblages, allow to inferring palaeoenvironmental changes.
The upper Tortonian sedimentation started with fan-delta conglomerates that quickly changed to outerplatform
silty marls deposited in a setting with a relatively low sedimentation rate as indicated by the
concentration of glauconite. Higher up into the section, a progressive shallowing trend is inferred, and
sediments of inner platform settings were forme
