Scooby and the Nertzosaurus

Scooby and the Nertzosaurus  is the first story of Scooby Doo... Where Are You! issue 2 by Charlton Comics.

Premise
A paleontologist thinks he has discovered a new species of two-headed dinosaur.

Characters

 * Scooby-Doo
 * Shaggy Rogers
 * Fred Jones
 * Daphne Blake
 * Velma Dinkley
 * Professor Nertz