this is a nice slab with Zacanthoides typicalis from Spence shale Utah.
this trilobite is a molt, and you can see the left genal disarticulated but still present into the slab.
Super nice fossil preparation.
Zacanthoides typicalis (Walcott 1886)
Spence shale member
Box Elder County
Cute Zacanthoides typicalis from Spence shale Utah
size slab: 20 cm x 20 cm
trilobite: 3 cm
restoration: no resto
preparator: Alex Zagar