This is a large trilobite of the species Hoekaspis matacensis from the middle Ordovician of Bolivia. The trilobite is nicely centred on a  massive and nearly circular concretion.  | |||
Location:  | Pampa de Otavi, Bolivia | ||
| Size trilobite: | about 90 mm long | ||
| Age: | Middle Ordovizium, LLanvirn (Darriwilian) (465 Ma) | ||