Abundance of marine invertebrates; first trilobites and foraminifers. That's what lives on the floor of the ocean. That's why it's at the bottom of the stratigraphic column.
Abundance of marine invertebrates
August 7th
"Heavy rainfall and aridity?" An ecosystem had 40 days and nights of rain, was buried in sediment, and what was left afterwards dried out. The Devonian is one of the biggest jokes in human history.
February 24th
It's not possible to prove that the earth is rotating. Experimental results which have formerly been used as a way to prove that the earth has daily rotation are examples of Gravitational Drag Effect.
Choosing Blindness
Noah's flood was a world wide cataclysmic event that drastically changed both the surface of the Earth and its internal structure. So where's the evidence? Literally everywhere.