Possible Clues:

• Earliest part of the Stone Age
• Period at the beginning of the Stone Age
• Of the earliest period of the Stone Age
• Period clothes mostly embroidered, dressing two separately
• Eliot revised end of Middlemarch, adding one chapter from an early period
• Era primarily old, life without iron, not quite Neanderthal — was it?
• Related to the earliest period of human culture
• Early age of the stone is to oil the mixture, I see
• How I coil the age of the stone
• It's early and stony this time