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Re: "global warming"....
Edited by George in Bandon Oregon on 2/1/2018, 11:56 am
there has been some movement all over the place but likely not that much for many places in North America. for example the "subtropical" paleofloras of Eocene Montana, Wyoming, and for that matter the U.K. and Germany were apparently deposited at similar latitudes then as now.
sea levels were generally higher and ocean areas more extensive at the time so there was likely some more moderating influences even for interior areas and in many cases the landscape was lower in elevation with fewer tall mountains in the western part of North America to block mild marine air from influencing climates far inland.
also the complete separation of North and South America (and for that matter Europe and Africa (which were both essentially islands at the time) then allowed warm ocean water and air-masses to circulate all around the continent(s) for even more moderating influence.
happy times for plants back then.
the upper southern oregon coast
USDA zone 9a (Sunset zone 5)
DRY cool summers and WET cool winters
grow eucalyptus, banksias, telopeas, grevilleas, bottlebrush, mexican pines and oaks