what are it's features?
Slender and lightly built, its size was comparable to that of a brown bear.
Dilophosaurus
Slender and lightly built, its size was comparable to that of a brown bear. 
what is the spitting dinosaur in jurassic park "Dilophosaurus" when was it discovered? 1940 by whom? Navajo Jesse Williams
wiki:1878752
Dilophosaurus [SEP] Description
"Dilophosaurus" was one of the earliest large predatory dinosaurs, a medium-sized theropod, though small compared to some of the later theropods. It was also the largest known land-animal of North America during the Early Jurassic. Slender and lightly built, its size was comparable to that of a brown bear. The largest known specimen weighed about , measured about in length, and its skull was long. The smaller holotype specimen weighed about , was long, with a hip height of about , and its skull was long. A resting trace of a theropod similar to "Dilophosaurus" and "Liliensternus" has been interpreted by some researchers as showing impressions of feathers around the belly and feet, similar to down.