Cro-Magnon were early modern humans. They spoke just like we do.
Cave painting
Large animals, like bison, horse, mammoth, etc.
Cave paintings and having body ornamentation
The Cro-Magnons lived in Europe as the Ice Age was finally going away.
The opposite of a deliberate way of speaking would be speaking impulsively or spontaneously without much thought or consideration.
Parlance
Writer's style is their unique way of speaking to the reader. Each writer has their own style.
They painted on cave walls, and carved small stone figurines known as Venuses.
cromagnons had cave art but did not draw any kind of animals they drew the animals in the environment they live in or also by the biomes they lived in
I think John McCrae was speaking, but he was also speaking for other soldiers who felt the same way as he did.
speaking and sci language
No it isn't, a dialect is a way of speaking.