Specimens of Coccosteus Plates from Orkney, Scotland. These samples were found in old red sandstone, sandwick fish beds dating them to the Devonian period. Coccosteus is an extinct genus of arthrodire placoderm that lived during the Devonian period, fossil specimens of Coccosteus have been found in both North America and Europe. Coccosteus was relatively small compared to other Placoderms being 20 centimetres in length on average, it was armored like all Placoderms and had a joint between the armour on its body and skull like other Arthrodires. These samples are of Coccosteus plates from the fish's armor plating. Fossil specimens of Coccosteus have been found in both saltwater and freshwater deposits, while most samples have been found in freshwater deposits this suggests that the genus could enter saltwater as well. These pieces are perfect for any British fossil collection and come supplied in a white card tray with an information label.