Procompsognathus

Procompsognathus described in 1865, was thought to be a Ceratosaurian Dinosaur that was found in sediments from the Late Triassic period. However, a recent investigation found that Procompsognathus was scattered bones of different Archosaurian lizards, not a dinosaur at all.

In Jurassic Park
Procompsognathus was originally thought to be in Jurassic Park, but it was obviously a misidentified Compsognathus, since Procompsognathus is not a valid discovery any longer.