Doraemon: Nobita’s New Dinosaur

The Time Furoshiki was calculated from the fossil egg's age, but the calculation was imprecise. Instead of reaching the Late Cretaceous period where the egg originated, they arrived in Late Jurassic Colorado. This error sets the entire adventure in motion, as they must navigate an entirely different prehistoric era.

Earlier in the film, Doraemon notes that the egg's exact age is difficult to determine since it's a newly discovered species not in any encyclopedia.

Jill is an agent working with Natalie, both part of a time-monitoring organization. Jill has shape-shifted into a white monkey to secretly observe Nobita's group. They are tracking whether the group will alter historical events, which is strictly prohibited by the Time Patrol.

The mysterious island is actually the Breeding Diorama Set that Nobita dropped in Colorado during the time-travel chaos. Over time, the diorama grew and became a living island with its own ecosystem. This explains why the dinosaurs there perfectly match Kyu and Myu's species.

Nobita loses the Breeding Diorama early in the Jurassic journey when he trips and drops it.

Kyu was rejected because he cannot fly and has a shorter tail compared to the other dinosaurs of his species. The group viewed him as different and refused to accept him. This rejection motivates Nobita to help Kyu prove he can fly, leading to the film's emotional climax.

Earlier, Myu learns to fly quickly while Kyu struggles, showing their developmental differences.

The Time Patrol initially blocked Nobita because changing history is forbidden. However, when Jill holds a check card on Nobita and Kyu, it emits light. This mysterious reaction causes the Time Patrol to reconsider and allow their actions, apparently recognizing something special about their intent.

Jill's mysterious check card first appears when monitoring the group.

After being rejected by his kind, Kyu undergoes intensive training with Nobita's encouragement. Despite many failed attempts, Kyu progresses from tentative gliding to true flapping. This moment symbolizes a new evolutionary step, turning dinosaurs into birds, and represents the movie's theme of perseverance.

Nobita notices Kyu practicing alone at night, showing his determination before the breakthrough.

The meteorite represents the Cretaceous extinction event that occurred 66 million years ago. Gian and Suneo discover the island is actually the Breeding Diorama, and realize the meteor strike will destroy all the dinosaurs unless they act. This creates the urgent rescue mission that drives the climax.

Kyu and Myu are Sinosauropteryx, a newly discovered species not listed in the Complete Encyclopedia of Space. This explains why their care is challenging and why the Time Patrol is interested in them - they represent an unknown species that shouldn't exist in their time.

Dr. Dinosaur warns that caring for an unknown species will be difficult.

At the beginning of the movie, Nobita fails a bar reversal and jokes that he'll eat monkey nuts with his eyes if he fails to find a dinosaur. At the end, after his adventure and growth, he successfully completes the bar reversal, symbolizing his personal development and the theme that perseverance leads to success.

The bar reversal challenge appears early when Nobita makes his bold vow about discovering a dinosaur.

When Nobita's mother comes upstairs due to the dinosaurs' commotion, the group attempts to hide Kyu and Myu using the Spatial Movement Crayon. However, the crayons malfunction and the townspeople see the dinosaurs. This forces the group to decide to return the dinosaurs to their time earlier than planned.

The Spatial Movement Crayon has limitations that become apparent during the escape attempt.