Of course! As well as symbols from every pagan religion known. It's all to make them feel welcome in the one world religion. Cardinal Newman admitted such.
"We are told in various ways by Eusebius that Constantine in order to recommend the new religion to the heathen transferred into it the outward ornaments to which they had been accustomed in their own. [Cardinal Newman, Development of the Christian Doctrine pg 373]
Mary is stepping on the moon, as the woman clothed with the sun, and the moon under her feet, and on her head a crown of 12 stars!