It depends how you see it. In the original Japanese version, there were only 2 seasons. However, 4Kids Entertainment made the original season get divided into 2 seasons, so the Japan's 2nd season of Dinosaur King would be the US's 3rd season.
Denver the Last Dinosaur - 1988 Denver the Lost Dinosaur 2-19 was released on: USA: 1989
Denver the Last Dinosaur - 1988 Denver the Last Dragon 2-25 was released on: USA: 1989
Dinosaur King - 2007 Battle at the Pyramids 1-2 is rated/received certificates of: Australia:G
Denver the Last Dinosaur - 1988 Moviestarus 2-9 was released on: USA: 1989
Dinosaur Train - 2009 King Meets Crystal 2-27 is rated/received certificates of: Australia:G
Because no one liked his character Andy and they wanted a twist with every end of each season Season 1 last episode ~ Andy Dies Season 2 Last Episode ~ Dan Moves Season 3 Last Episode ~ Prue Dies Season 4 Last Episode ~ They Get A Chance 2 be Mortal Season 5 Last Episode~ Leo Becomes an Elder and has 2 leave the charmed 1s Season 6 Last Episode ~ Chris Dies Season 7 Last Episode ~ Charmed Ones Fake Own Death Season 8 Last Episode ~ Piper goes back in time 2 save phoebe and Paige and they get Leo back
Denver the Last Dinosaur - 1988 Food Wars 2-23 was released on: USA: 1989
Denver the Last Dinosaur - 1988 Chef Denver 2-28 was released on: USA: 1989
Denver the Last Dinosaur - 1988 Radio Denver 2-3 was released on: USA: 1989
Denver the Last Dinosaur - 1988 The Chinatown Caper 2-18 was released on: USA: 1989
Denver the Last Dinosaur - 1988 Jogging Denver 2-24 was released on: USA: 1989