Lunar notations tooled into the Blanchard Bone - estimated to be 30,000 years old. Marshach judged that these engravings indicated a definite progressive sequence.
 

Calendar stone K-52. This carving was found in England dated to around the fourth millennium. First deciphered by Martin Brennan it shows a complete lunar calendar. The large spiral at the bottom center corresponds to the Great Goddess at point 1 in the cycle. At point 28 the Moon returns to the womb of the Great Goddess to undergo rebirth.

 
"Goddess of Laussel" rock carving 22,000 - 18,000 BCE. Dordogne, France.