Luis,
There's some rather dodgy details with other images, namely the photochopped backgrounds. I guess, though, that you did have a strict deadline to meet, and doing everything with one single technique wasn't an option.
On the presentation of the images themselves on the webpage I have to say the pixellated "Opening" and "Eudimorphodon" aren't eyecatching for the animals but for their overstretched state.
My two cents (which is about all the money I have now), Renato Santos