1994 Ben Edlund's The TICK Animated Series S01E03 Dinosaur Neil

The Tick TV Series 1994–1997 TV-PG The Tick (1994)
An invulnerable, somewhat dim, superhero protects The City from all manner of evil-doers.
Creator: Ben Edlund
Stars: Townsend Coleman, Rob Paulsen, Cam Clarke
S1.E3 The Tick vs. Dinosaur Neil Episode aired Sep 24, 1994 TV-Y7
Micky Dolenz, Townsend Coleman, and Danny Mann in The Tick (1994)
Dinosaur Neil talks about dinosaurs at his job, but when he is eating his lunch in the lab (even though a sign clearly states "Don't Eat in the Lab"), he accidentally ingests Dinosaur DNA, becomes a dinosaur, and rampages through the city.
Writers: Ben Edlund, Richard Liebmann-Smith, Martin Pasko
Stars
Townsend ColemanMicky DolenzJess Harnell