OK questa la posto perchè è davvero bella....
alcuni dati:
Inzeria sp. Katavskaya formation. Inzer river, South Ural, Assy, Beloretsky dist., Bashkortostan, Russia dim. 17 cm x 10 cm 1 kg
front photo:
AF Veis, NG Vorob'eva, EY Golubkova. 2006. The early Vendian microfossils first found in the Russian plate: Taxonomic composition and biostratigraphic significance: Stratigraphy and Geological Correlation - Springer, Volume 14, Issue 4, pp 368–385