Among other eccentricities, Halstead seems to have a real love for the classic, chimeric "Brontosaurus" a la Marsh. In other books, Halstead referred to apatosaurs as 'brontosaurs' even after acknowledging their correct name; here, he perpetuates the myth that Apatosaurus "used to be called Brontosaurus" (the name Apatosaurus came first - it's a generic name ferchrissake!). Accordingly, Caselli illustrates Apatosaurus semingly based on Marsh's 1880s "Brontosaurus" skeletal, complete with mismatched macronarian head. When it comes to sauropod habits, Halstead is most definitely of the old, swamp-dwelling school, and he points to various features of the sauropod skeleton that are (according to him) adaptations to an aquatic lifestyle, including a long, heavy tail that served as a sort of anchor/propulsion device. Of course, nobody in their right mind would suggest that these days.
Oh dear. I absolutely love the colours, and the feathers are beautifully rendered, but...why? WHY? You've drawn a skeleton RIGHT THERE! Look at it! Look at an extant bird's skeleton! I need a lie down.
And finally...it's the image you've all been waiting for! Maybe. This illustration of two fighting Pachycephalosaurus is probably my favourite from the entire book. There's a fantastic sense of movement and inertia here, and that impact looks painful - just look at the one on the right, sailing through the air. There's even a brilliant Handy Diagram to show you in which direction the heads would have travelled, just in case you couldn't figure it out for yourself. Just wonderful stuff.