30289 - Museum Grade Trident 2.09 Inch Walliserops trifurcatus Middle Devonian Trilobite Nenoticidaris mercieri Finest preparation

Finest preparation

The sediments were formed in delta and fluvial environments

Rare specimen from an early evolutionary stage of the modern whale

together with the quartz grains occurrence

30289 - Museum Grade Trident 2.09 Inch Walliserops trifurcatus Middle Devonian Trilobite Nenoticidaris mercieri Finest preparationImpressive specimen, prepared in an exceptional way. This type of preparation requires meticulous work of tens of hours. Of course, many of the spines during the preparation process have been fractured and glued again, with slight restorations in the fracture zones. A preparation like this without small restorations is impossible. It is an authentic specimen of Museum Grade. This species of trilobite is very rare, with an almost extraterrestrial