Goniatitengruppe | Marokko Amethyst two distinct zones of very

two distinct zones of very fine-grained calcareous muds are particularly noted for preserving a large number of complete and detailed fossils

the 18-inch layer

especially in the Devonian and Carboniferous periods

this replacement is so precise that both the internal structure and the external form are faithfully reproduced

Goniatitengruppe | Marokko Amethyst two distinct zones of veryOrigin: Morocco Age: Devonian period, ca. 419 to 358 million years ago Size: L52cm W46cm D20cm Weight: 20kg Description: The Goniatites (Goniatitida; from the Greek = angle, corner, after the bent sutures) are an extinct order of late Paleozoic ammonites (Ammonoidea). In the period of their occurrence between the Devonian and the end of the Permian, they represent the majority of the Ammonoidea. Goniatites represent a whole series of important index