Amargasaurus was an unusual looking dinosaur. It had a set of double sails running down its back which may have continued up its neck or may have tapered off into a double row of spikes. It is one of those dinos which scientists and artists are working hand in hand to come up with a logical appearance for. This is what is so fascinating about being a paleoartist, it allows you to play mystery sleuth and piece together the clues to come up with a complete animal. Bryan Baugh knocked this illustration out of the ball park, as he did with everything he contributed to Thunder Lizards!: How to Draw Fantastic Dinosaurs.