Schöne Flechten-Aufnahme.

Superbes végétaux !
Bon weekend. Amitiés

It's a lichen. Lichens were the first organisms to colonise dry land 500 millions of years ago, long before plants and, of course, the first land animals, which arrived 100 million years later.
So there's nothing more prehistoric than that!

Thanks for interesting iinformation

Very unusual capture, Fred!