Rudosols are soils that have very little structure or organisation of particles. Theses soils are typically young (relatively) and are still forming their structure. This means the soils could be just the A horizon with little B horizon, or even be the soil formed from direct weathering of parent material.
The sub-order for Rudosols are here.
The great groups are dependent on the sub-order, with only some of the sub-orders having classification.
Great groups for Hypersaline Rudosols are here.
Great groups for Clastic Rudosols are here.
Great groups for Leptic Rudosols are here.
The sub-groups for Rudosols encompass all sub-order except Shelly Rudosol and Carbis Rudosols, the decision tree is here.
SoilSarah 