Avengers (2018 series) #7

The date of 1,000,000 BC would make Ghost Rider a member of a precursor species to Homo Sapiens such as H. Erectus or H. Antecessor. The pack are shown using fire, which fits. Both species are believed to have had the physical requirements for complex speech. (Which still doesn't explain how our boy could converse with the Wendigo when he'd had no-one to talk to before.) The lad is shown studying hand stencils on the cave wall. We haven't found any which date back that far. It doesn't look like our boy made them because his hand is too small.

The boy refers to sabercats and walking mountains. Varieties of sabercat were around at the time. If walking mountain means dinosaurs like the brontosaurus then of course they were long-gone - at least on our Earth. And on Marvel Earth they survived in the Savage Land.

Mammoths and mastodons were also alive at the time. This is presumably a mammoth, species of which occurred all over the world, whereas mastodons were restricted to the Americas. And of course the cave people would have been in Africa or Eurasia.

Is the Big White supposed to represent an Ice Age? Technically we are still *in* the Quarternary Ice Age that was happening then - we're just in an Interglacial Period where the ice has retreated a lot (although climate change might break us out of that cycle). The warm Interglacials and the coldest peaks of the Ice Age are geologically short, and it seems that 1 million BC was in a more common intermediate stage where the ice covered a medium amount of the globe. But geological changes are so slow that the ice would seem to be static. Except of course in a large boundary region where it would snow in winter and melt in summer. Possibly GR's people lived in that boundary area, but near the permanent snow which was the Big White.