And God remembered Noah, and every living thing, and all the cattle that was with him in the ark: and God made a wind to pass over the earth, and the waters asswaged.(Genesis 8:1) KJV
The wind which came after Noah’s flood evaporated the waters and caused global cooling, leading to polar and equatorial glaciation. Evidence of equatorial glaciation is assigned to the Permian.
This was directly after Noah’s flood which is the period of time into which the Miocene naturally drops, so it’s natural to try and account for this phenomenon in the description of the Epoch.
“Climatic cooling and restriction of broad-leaved evergreens to lower latitudes“. The truth is absolute and there are times when it’s impossible for mainstream science (SciPop) to avoid it, even though the scientific method is designed in such a way as to make it very unlikely that it’s narrative of godless existence and the truth will ever coincide.