<P> Vertebrates are known from both body fossils and trace fossils . Vertebrates known from body fossils include (the following after Lucas et al. (2005), except where noted): hybodont sharks, indeterminate bony fish, lungfish, salamanders, the frog Prosalirus, the caecilian Eocaecilia, the turtle Kayentachelys, a sphenodontian reptile, lizards, several early crocodylomorphs including Calsoyasuchus, Eopneumatosuchus, Kayentasuchus, and Protosuchus), the pterosaur Rhamphinion, several theropods including Dilophosaurus, Kayentavenator Coelophysis kayentakatae, and the "Shake N Bake" theropod, the basal sauropodomorph Sarahsaurus, a heterodontosaurid, armored dinosaurs Scelidosaurus and Scutellosaurus, the tritylodontids synapsids Dinnebiton, Kayentatherium, and Oligokyphus, morganucodontids, possible early true mammal Dinnetherium, and a haramyid mammal . The majority of these finds come from the vicinity of Gold Spring, Arizona . Vertebrate trace fossils include coprolites and the tracks of therapsids, lizard - like animals, and several types of dinosaur . </P> <P> Explorations in the 1970s and 1980s by James M. Clark, Farish Jenkins and David E. Fastovsky and collection and analysis by William R. Downs have produced several vertebrate specimens . The Kayenta Formation has produced several mass burial sites, and the remains of three coelophysoid taxa of different body size, which represents the most diverse ceratosaur fauna yet known . </P> <P> Dilophosaurus is featured in both Michael Crichton's 1990 novel Jurassic Park and its 1993 movie adaptation . It is depicted as venomous, being able to spit venom, aiming for the eyes to blind and paralyze its prey (much like a spitting cobra); in the film, it also has a retractable neck frill around its neck (much like a frill - necked lizard). There is no evidence to either prove or disprove either the frill or the venom spitting, which was acknowledged by Crichton as artistic license . In the film, Steven Spielberg also reduced the size of Dilophosaurus to 3 feet (0.91 m) tall and 5 feet (1.5 m) long in order to avoid confusion with Velociraptor . Dilophosaurus was designated as the state dinosaur of Connecticut . </P>

What is the dinosaur in jurassic park that spits