A fossilised whole rough Goniatitida is a coiled, chambered shell that dates to the Devonian era, from 419 to 359 million years ago. These aquatic organisms, which belong to the ammonoid group, featured a spiral shell with chambers and a central tube for buoyancy control. They are crucial for comprehending both the history of Earth and marine life in antiquity.

The fossil you receive will be a very close example to the one shown in the photo.
Approx Size: 3.5 cm