As a comparison, this supernova occurred 160 million years before the formation of the Earth.

The valley was home to numerous settlers before the formation of the national park.

Symptoms start appearing two to eight days before the formation of an abscess.

It proves the Swaan was there before the formation of this range.

Under the proposals, elections to the 108-seat assembly were to be held early in March before the formation of a local executive later that month.

The story takes place before the formation of the Justice League.

Before the formation of Unit 101 only they undertook these missions.

It was probably attributed to the village before the formation of the present population .

Before the 1965 formation of the cultural group, the club celebrated multiple kirchweihs each year.

Land life was impossible before the formation of an ozone layer.