Here is a extremely rare Delgadella lenaicus from the lower cambrian of Siberia in calcite shell preservation. The three thorax segments are clearly visibile, the pigidium and cephalon show good details. On this Eodicida species are the rachis rings relative rounded and smooth developed.
|Lena River, North Sibiria, Russia|
|Size trilobite:||about 9 mm long|
|Age:||Middle Cambrian, Hatanga-Fm|