The first air-breathing animals to appear in the stratigraphic column were the ones who just happened to be living on the beach or at the coast during Noah's flood.
Scorpions and Millipedes, first Air-breathing Animals
First Vascular Plants in mid-Silurian
The first vascular plants that were buried in Noah's flood are on top of the beach sand which is full of dead scorpions because they were growing in the dunes inland of the beach.
August 6th
Silurian sediments originate on land near the ocean (the beach). The closest sediment to the ocean was the first terrestrial sediment deposited in Noah's flood.