When Does "Anthro" (1968) Take Place?
"Anthro" is a comedy historical fiction comic-book written by Howard Post that premiered May 2nd, 1968. So when is "Anthro" set?
It takes place on the fictional DC Comics Universe timeline roughly in the years:
We know this because Anthro appears and is very young so it must be quite some time before his final appearance in "Batman: The Return of Bruce Wayne" #1 (2010), which takes place around 312950 BC.
Anthro's parents are Homo neanderthalensis (neanderthals) but he is Homo sapiens; this is why he is often billed as "the first boy". Homo sapiens, the final species of human, first appeared about 315,000 years ago (313000 BC) in the real world.

~313000 BC - ~312999 BC
We know this because Anthro appears and is very young so it must be quite some time before his final appearance in "Batman: The Return of Bruce Wayne" #1 (2010), which takes place around 312950 BC.
Issue #3 "Journey to the Island of Green!" depicts the characters in the spring, as they have just survived winter. Therefore, we have moved into a new calendar year, 312999 BC.
It is a chronologically early comic in the DC Comics Universe multiverse timeline (the second through seventh chronological stories to feature Anthro, the first boy) and can be read at its timeline point or as part of an extended flashback before "Final Crisis" #1 (2008) or before the "Tales of the Unexpected" v2 "Doctor Thirteen" (2006) back-up stories.
Issue #1 includes a back-up strip "" by Henry Boltinoff .

