This idea came from a dream.
In my dream I was piloting a Spinosaurus, Helicopter cyborg mecha that was
armed.....
get it? 
in ancient Rome during some sort of riot against ufos. But all I really remember was this Spinosaurus.
Anyhow I was inspired by my odd dream creation I wanted to draw it. So there we go. I knew from my dream that it cannot fly, and really there was no point in it being part helicopter....but it was so COOL.