Ogygiocarella debuchi (Brongniart, 1822)
Ordovician period (495 - 443 million years ago)
Locality : Meadowtown Beds, Salop, Shropshire, England
One of the most famous trilobite fossils from the UK. Infamously, first described as a "flatfish" in 1698, it was not included into the trilobite family for near a century afterwards. Known for it's distinct disc shaped pygidium and rounded, near flat, appearance, this species of trilobite are some of the most well known from Wales.
This specimen is the showing the trilobite in a ventral - underside - possition.