What was the end of the triassic period
- What caused the end of the triassic period
- What marked the end of the triassic period
- What event marked the end of the triassic period
- What went extinct at the end of the triassic period
- What caused the mass extinction at the end of the triassic period
- What caused the extinction event at the end of the triassic period
- What triggered the extinction event at the end of the triassic period