Microparia is a Cyclopygidae and belongs to asaphid's family. They are swimming trilobites with ventral eyes very well developed. It's hard to find trilobites with complete Eyes...Just few samples for years has this super quality!
 
Microparia sp.
Ordovician Caradoc
Ktaoua FMT
Jbel Tijarfaïouine
El Kaid Errami
Morocco