We see that Juliana does indeed give birth to the son of Burp!
Burp the caveman gets the ultimate revenge. He didn't get the girl in the end, but he does make sure that Neanderthal man lives on into the far future. This pages sets the story up for a further adventures of the son of Burp the caveman.
I'm sure that James Dawlwood is not very happy about this turn of events.