Did dinosaurs live in a thick soupy atmosphere?

Can you imagine living on an Earth where it was always warm like in the tropics, where you could strap wings onto your arms and scuba fins onto your feet and fly or rather swim through the sky?

This is most likely the Earth that the dinosaurs knew.  David Esker recently released a beautiful website presenting this bold theory:

Using simple layman's terms yet with convincing detail the website documents the many ways a thick soupy atmosphere makes sense of what we know about dinosaurs.  The combination of dinosaurs, physics equations,  earth's atmosphere, and sharp images and diagrams makes for nearly irresistible reading (but I am resisting at least until I get home and get the kids tucked in bed).