Note: Do not rely on this information. It is very old.
Zones, beds characterized by one or more distinctive fossils which, if not confined to their particular zone, are at least most abundant in it.
“But he said to me, "My grace is sufficient for you, for my power is made perfect in weakness." Therefore I will boast all the more gladly about my weaknesses, so that Christ's power may rest on me.” – 2 Corinthians 12:9