This Deanaspis goldfussi plate demonstates nicely the mode of molting on Trinucleid Trilobites. The carapace braked open along the cephalic rim so that the duplication with the genal spines is separated. The trilobite leaves thou this opening its old carapace.
|Letna, Barrandian area, Czech Republic|
|Size trilobite:||about 12 mm long|
|Age:||Middle Ordovician, Llandeilo, Letná Formation (About 464 mill. Years old)|