Petrolignopsida

Petrolignopsida are a class of Crystal Flora which are distinguished by their mineralized, bone-like trunks. They include some of the earliest multicellular organisms on land.

Order Solacoronales
Petrolignopsids with a single, non-branching trunk with a head of crystals on top.

Order Crystallopellales
Petrolignopsids which have mineralized above-ground root and branch systems covered in small clusters of crystals.