[eartrumpet]

But the theory fell out of favor, in part because no one ever found any abiogenic oil deposits...

I believe that abiogenic oil is all they ever found.

[PGR88]

I believe that dinosaurs invented light-speed spaceships and travelled to other worlds, where they grew algae and died, creating huge pools of hydrocarbons across the universe. How else would hydrocarbons be found on distant planets???

http://www.rigzone.com/news/article.asp?hpf=1&a_id=122925

[genghis]

i first heard this theory about ten years ago and it just made so much sense.
But i am not an expert and am waiting to hear more information, just from an esthetic point of view i hope you are correct