Keuper - from sea to land and back again
It happened over 200 million years ago at the end of the Keuper period: the sea returned again and this time it was destined to stay a long, long time. Today we can still see evidence of this in a small Keuper layer, the so-called „Grenzbonebed“, which documents the exciting transition the terrestric Keuper mainland to the Jurassic Sea. And with a bit of luck, you may find a shark‘s tooth or even a reptile‘s tooth.
Apart from occasional marine invasions, it was often as dry as a bone in the Keuper Period itself. This alternation between „water“ and „desert“ can still be seen in the deposits of the Alb foreland. There is hardly any other rock succession that offers so much variety of shapes and colours than the Keuper period: red, blue, violet, black and green sandstone and clays create a magical array of colours. A variety of internationally significant fossil finds in the Swabian Alb area have shown us what creatures were living in the seas and subtropical landscapes of the Keuper period: amphibians, dinosaurs, lungfish and the worldwide oldest turtles. Among the plants, finds have included remains of horsetails and fern fronds.
continue with Lower Jurassic