Was the dodo in the dinosaur era?

Not really. The dictionary gives 3 meanings --

1. A large, clumsy, flightless bird, formerly of the island of Mauritius in the Indian ocean, that has been extinct since the late 17th century, i.e. no living specimens exist.
2. Informal. One who is out-of-date, as in dress or ideas.
3. Informal. A stupid person; an idiot.

And, the spelling for the other creature is 'dinosaur'.