30,000 B.C.

In the real world

 * Around this time, the Chauvet-Pont-d'Arc Cave, in southern France, has its walls painted on by Upper Paleolithic homo sapiens, depicting a number of animals.

In the Kaiju Multiverse

 * Godzilla's earliest depiction is on the art in the Chauvet Cave's walls. (Godzilla: Awakening)