Well, things haven't changed that much. In homo sapiens' current manifestation, similar cupmarks are found in many major appliances--they protrude unexpectedly from our Babbage machines, and sit waiting for someone to put something in them in the back of our transport wagons and our leisure seating ledges (baar-kaah-lounzjhrrs). They have been seen appearing in the mystic ritual devices used for worshipping the god TheeVhee and his half-deity companion Bloo Rayee, and their hero-icon offspring Deevie Dee.