Paleozoïcum, 251-542 Ma

Upper Carboniferous, Westphalian 304-316 Ma

Carboniferous, Devonic, Silurian,

Ordovicium, Cambrian, Morocco, Alnif , 2012

Latvia, Middle Devonian, Givetian 387.7–382.7Ma

Silurian, Latvia

Graptolite, Climacograptus sp., Fauquez, Belgium, Ordovicium

This fossil colonial animal, can be found in the oldest rocks in Belgium to contain fossils, the Caradoc, Ordovicium, +-450 million years old.

Ordovicium, Fauquez, Small organism?, 2-3mm, mollusk?