This is a rare trilobite of the species Asaphellus homfrayi from the Lower Ordovician of Shropshire.

Here is a detailed trilobite from England of the species Barrandia homfrayi

This is a rate trilobite from wales of the species Bergamia whittardi.

Here is a rolled up trilobite of the species Bettonolithus chamberlaini from Gilwern Hill.

This very rare trilobite from the Upper Cambrian of North Wales belongs to the species Olenus micrurus.

This is a rare trilobite of the species Platypeltoides primaevus from the Lower Ordovician of Shropshire.

This is a juvenile trilobite of the species Porterfieldia punctata from the Arenig of South Wales.
This Porterfieldia is a Meraspis stage with a length of about 9 mm.

This is a trilobite of the species Porterfieldia punctata from the Arenig of South Wales. 

This is an inexpensive specimen of a trilobite of the rare species Whittardolithus inopinatus from the Ordovician of Shropshire.