The cretaceous period during which the flowering plants appeared, occurred approximately

The first flowering plants appeared in

First known flowering plants appeared in

The Permian period, during which the first most modern orders of insects appeared, occurred approximately

The Pernian period, during which the first most modern orders of insects appeared, occurred approximately

The Pernian period, during which the first most modern orders of insects appeared, occurred approximately

The first seed plants appeared during

The first seed plants appeared during

The first seed plants appeared during

The first seed plants appeared during