Artist Mark &quot;Crash&quot; McCreery&#x27;s conceptual drawing of Dilophosaurus (aka Spitter) perfectly captures the curiosity of the beast seen in &quot;Jurassic Park.&quot; The frill of the lizard was added in the film. The frill is speculation on the filmmakers&#x27; part. Most dinosaur remains do not show a frill since a frill would not survive fossilization. http://news.cnet.com/2300-17938_105-10016367-18.html