300 Million Years
Lourinhã Towns and Villages Inhabited since ancient times, it was in the Lourinhã region that the most important evidence of the presence of dinosaurs in Portugal was discovered - the fossilised eggs and respective embryos, which are displayed in the Municipal Museum.
https://www.visitportugal.com/en/NR/exeres/BF3F060E-2C10-4758-AAA9-E8C2B9F7F695