– Museum am Schölerberg https://www.museum-am-schoelerberg.de/nda-uebersetzungen/wasser/biodiversitat/9280-2/
The sea level is rising: during the Early Cretaceous, 145 million years ago, the local region of rivers and lakes is slowly but steadily flooded. 100 million
In the ocean, plankton thrives, as do the ammonites: some reach up to 2.5 metres in diameter, others