"The storing of fire in a fennel stalk (was invented) by Prometheus." Pliny the Elder, Natural History, 7:198
It is my contention that such myths were inherited by the Greeks from a much older culture and appear to be grounded in the worldwide memory of one or more catastrophic events. I mention it here because your post is extremely interesting in that dual context. As we all know, the cow god is of great importance. Our word for god comes from Sumerian GUD, the bull. So yes, most definitely a culture that lies uncomfortably with both the recent past and the present as you suggest.
Thanks to your recognition of the beauty of these artefacts, it seems to me you are helping to preserve our fragile memory of that widespread culture. That is the positive attribute of the passionate and sensitive collector. The photos are wonderful but it would be interesting to see more detail of the carvings in sketches. Perhaps in your book?
*ZU-LUN (where the symbol for LUN is also PA), knowledge of the breath, of Pa (gave us the words Pan and pagan), also translates to “the knowledge to scatter”. Languages and myths have all evolved, but the original images and sounds persist – as does the knowledge of fire.