And we should acknowledge the long ago work by #AlexanderMarshack on 'timefactored' notations and lunar calendars in the #UpperPaleolithic

This is his wonderful photo of a detail from the #Lalinde Plaquette, c.13,000 years old from Dordogne -- a #ritual artefact of a #lunar and #menstrual cosmology. Carved into soft limestone, it shows dancing, female figures linked by the powerpoints of their #vulvas with grooving that has apparently been ritually repeated.