>>49617541At most it needs:
A gazelle that may evolve into a wildebeest
An ostrich, perhaps a regional dodrio
A secretary bird, a shoebill, or a marabou, all 3 are good options
A quadrupedal evolution for Rhyhorn, Nidorin@, or Laidon
A baobab evolution of Sudowoodo
A true Leopard and Cheetah or regional versions of Liepard
A hammerhead shark
A tropical version of the Galarian Penguin
Actually there are few species that cannot be replaced by some current equivalent in the pokedex. Well, but that leaves us a good margin for deities, monsters, and mythological figures.