Rocks: 1. Gneiss and Mica Slate system
Fœtal: 1st month, that of an avertebrated animal;
Scale: Radiata (1, 2, 3, 4, 5)
Order: Zoophyta, Polypiaria
Rocks: 2. Clay Slate and Grawacke system
Fœtal: 1st month, that of an avertebrated animal;
Scale: Mollusca (6, 7, 8, 9, 10, 11)
Order: Conchifera, Double-shelled Mollusks
Rocks: 3. Silurian system
Fœtal: 1st month, that of an avertebrated animal;