Name: Cyphaspis walteri
Age: Devonian, Eifelien, Bou Dib formation
Provenance: Jbel Mrakib, near Alnif, Morocco
Dimensions: 14.1 × 6.0 × 6.0 cm
Weight: 432 g

This trilobite is the famous "Devil horn" which was only named in 2014, although we have known it for many years. The tips are prepared in 3D. The block contains 4 fossil trilobites, one of which is upside down (it is seen from below, therefore concave)
The trilobites measure 2.0 cm without the spines.