"Devil Horned" Cyphaspis Walteri Trilobite Multiple

Here is nice multiple specimen of the Devonian trilobite Cyphaspis walteri sometimes referred to as the "Devil Horn" Cyphaspis. There are three complete specimens in the piece with the largest being 1.6" (including spine) One of them is still partially buried in the limestone. There is also a tail of some type of Scutellid trilobite.

This species was finally formally described in 2014. A link to the paper can be found below.

“Devil horned” Cyphaspis (Trilobita, Otarioninae): examples from the Middle
Devonian of the Ardennes (Belgium), Eifel (Germany) and Ma’der (Morocco)