Astronomy   View all facts   Glossary   Help

physical phenomena > event > era > geological era > precambrian era

precambrian era
subject			fact

precambrian era	has duration 2500 million years
	has start time 3100 million years ago
	is a kind of geological era
event	has synonym world point
	has time of occurrence

Kinds of precambrian era :

• lower precambrian period (3 facts)
• middle precambrian period (3 facts)
• upper precambrian period (3 facts)