Proterozoic eon

ریشه

The term 'Proterozoic' is combined with 'eon', which comes from the Greek word 'aion' meaning 'age' or 'eon'.

مثال

• The Proterozoic eon lasted for approximately 2 billion years.
• The Proterozoic eon is known for the emergence of complex life forms.
• Scientists have divided the Proterozoic eon into several distinct periods.