Composita was a genus of brachiopod from the Late Devonian up until the Late Permian. There are a few pieces of the original shell attached to the fossilized inside. This form of fossil is also known as a Steinkern. This species is very common in the local marine zones.

This particular specimen is remarkable due to the preserved markings on on the underside of the shell.

More about Composita online

  • Article – More about Composita from Wikipedia