Curvas de supervivencia en poblaciones de moluscos fósiles: Aplicación a Hydrobia stagnalis y Cardium glaucum del cuaternario del Cabo Salou (Tarragona, España)

The survivorship curves of a Hydrobia stagnalis population are compared. The curves based on growth stages and size-frequency distribution are very similar. A survivorship curve of a Cardium glaucum population completes the study. The fauna comes from the Quaternary of Cabo Salou (Tarragona, Spain).