Columns
31
Packages
431
Units
1,414
Age
3,000–0 Ma
(3 Gyr)
Area
577,140 km²
Max thickness
40,490 m

Fossils

Collections
4,601

References

2
  • Paleobiology Database. 2015.
  • Childs, O.E. Correlation of stratigraphic units of North America; COSUNA. AAPG Bulletin 69:173-180. 1985.