A layer with fossilized branched corals in Upper Jurassic Limestones in the Algarve (Portugal), with an age of about 155 Million years. The fauna is dominated by one species, Actinastraea ramulifera (it is possible that the name has to be submitted to a revision). This shows that during the period of growth of the corals, the environment was not optimized for them. The dense growth of the branches suggests that there was a strong water movement, so the corals had to support each other.
This site is visited on the tour “Cerro Grande”.