The Earth was flooded for about a year, including the 40 days of rain. Sediments were deposited which were later eroded, metamorphosed and lithified as the waters subsided.
Cenozoic/Upper Noachian (Subsidence)
Lemurs and Birds
"First lemurs; some modern groups of birds". Modern is a concept in the evolution narrative. The Paleocene is recent, therefore according to the narrative anything different about it can be called modern. It's meaningless.
Magnoliaceae, Lauraceae and Juglandaceae
"Angiosperms having affinities with Magnoliaceae, Lauraceae, Juglandaceae". This may seem random but it's nuanced evolution narrative, you just have to know something about the development of Angiosperms.
August 21st
The Paleocene is an ecosystem which has been destroyed, transported and buried in sediment during a world-wide flood.