The evidence that we have which has been assigned to the Pennsylvanian period is the total destruction of great swamps. They were buried and preserved, not formed. That's why they're now coal.
Formation of the Great Coal Swamps
Further Intrusion of Epicontinental Seas
“Further intrusion of epicontinental seas?” That sounds like a world-wide flood. In fact, it’s a way of saying world-wide flood without using the words world-wide flood. It’s an ecosystem, not a period of time.
Uniformly Warm, Humid Climates
Uniformly warm, humid climates is letting us know that there has to have been significant evaporation from the oceans to put all the water in the atmosphere that was going to be necessary to flood the world.
Continued Inundation of Low-lying Continents
"Continued inundation of low-lying continents?" That sounds like a world-wide flood. In fact, it's a way of saying world-wide flood without using the words world-wide flood. It's an ecosystem, not a period of time.
Warm, Equable Climate Again
"Warm, equable climate" are key words which allow us to pry open the subtle deception which has been crafted as a way to break down Noah's flood into small units, and then spread them across time.
Hypothesis 4
Was Mars the source of sediment for the Old Red Sandstone in Scotland? Comparing specimens from Mars and Scotland will show that they have the same provenance.
The Sands of Mars
The Martian landscape has been observed since the first telescopes and the cause of its evident erosion features is the source of scientific speculation which is an early foray into the world of SciFi.
The Old Red Sandstone
Is there any Biblical basis to support the possibility that billions of tons of sediment could fall out of the sky? Why yes, there is. There are several passages which describe rocks falling from the skies.
Worlds in Collision
"Worlds in Collision" is the title of a book by Immanuel Velikovsky in which he proposes, among other things, that the plagues of the Exodus were caused by successive close approaches to Earth by the planet Venus.
Diversification of Fishes
Billions of fish died during Noah's flood. Whole tribes were buried in sediment as it fell out of the sky. Wait, what? How does sediment fall out of the sky? Good question. We're going to have fun with that tomorrow.