"Rise of Northern Hemisphere Voltziales and diversification of Southern Hemisphere glossopterids. Extinction, arborescent lycopsids, and sphenopsids. Diversification of reptiles."
Voltziales and Glossopterids
Mosses, Lycopods, Sphenopsids
"Mosses, lycopods, sphenopsids, ferns, seed ferns and cordaites." The next part of the description we have of the Pennsylvanian is a laundry list of plant kinds which sounds like an ecosystem or habitat, not a period of time.
Catastrophically Buried Middle Pennsylvanian Sigillaria and Calamitean Sphenopsids from Indiana, USA: What Kind of Vegetation Was This?
A catastrophically buried stand of calamitean sphenopsids and sigillarian lycopsids is reported from the Middle Pennsylvanian of southwestern Indiana, in the Illinois Basin.
August 13th
After Noah's flood a wind caused the waters to evaporate. The cooling effect caused the formation of equatorial and polar ice. Temperate zones were in the mid-latitudes of the Northern and Southern Hemispheres.
August 12th
The Permian is an induction dumpster fire. Inconvenient sedimentary deposits and evidence of phenomenon which are difficult to rationalize found their way into the Permian.