Coelurus

Coulerus is a small carnivore from the Jurassic period, that was cloned by Ingen in Jurassic Park.It makes no physical appearance in the first novel, only being mentioned, and is absent in the second.

Jurassic Park
Even though it is not present in the first novel, there are two major reference:

Alan Grant mentions that Coulerus as one of the carniverous Dinosaurs he finds in Snake water, Montana.

Dr. Henry Wu says “Coulersaurus” is what he believes one of eggs in the lab will be.