Most likely Reanimation of Movie 10 Doraemon: Nobita at the Birth of Japan.
The 36th movie in the Doraemon franchise retells the plot of the 1989 film Doraemon: Nobita no Nippon Tanjou. Once again, Nobita longs to escape his home, but all available lands have already been claimed. Doraemon and their companions also wish to leave, and the only option they find is to travel back in time to a period before humanity inhabited the land. On their journey, they meet a prehistoric boy who requires their help in freeing his tribe from the grasp of Gigazombie.
Type: MOVIE
Country: Japan
Premiered: Winter 2016
Genre: Adventure, Comedy, Fantasy, Kids, Shounen
Date aired: Mar 05, 2016
Status: Completed
Duration: 104 min
Studios: Shin-Ei Animation
Producers: TV Asahi, Toho, Fujiko F. Fujio Pro