[AwesomeJayRobin]

its established that only those ten(eleven if you include tobaspino) can become rangers since the others guardians were destroyed, and torin says in the first episode something about defeating the dino's to be worthy

also in 100 years after they are all using dinos used in the show,

Daigo is navy tobaspino
Ian is Silver Bragigas
Nossan stays blue Stegotchi but as an armed on version
Souji is Grey Bunpachy
Amy is Cyan Ankydon
and Utchi is Purple Pluzeon