here (scroll down). Poul Anderson refers to the Paleotechnic.
"Officially, we live in the Holocene epoch. Yet it may be better to call the last 70,000 years the Anthropocene epoch: the epoch of humanity. For during these millennia Home Sapiens became the single most important agent of change in the global ecology."
-Yuval Noah Harari, Homo Deus: A Brief History of Tomorrow (London, 2017), Chapter 2, p. 84.
So does the Anthropocene date from 70,000 years ago or from 1945 (see image)? Nothing more clearly indicates a period of change than a disagreement even about the length of the period.