| This is a rare Nevada Trilobite of the species Esmeraldina rowei from the lower Cambrian Campito Formation. The Positiv Paradoxides has both cheeks. | |||
Location: | Jince, Barrandium, Czech Republic | ||
| Size trilobite: | about 23 mm & 20 mm long | ||
| Age: | Middle Cambrian, Jince Formation, Paradoxides gracilis zone (about. 518 mill. y.o.) | ||