Kannagara:
As he was picked up from Book 45, this is the morphs he has, including other morphs he has acquired in-game.
Gorilla (Big Jim)
Osprey
Flea
Wolf
Trout
Dolphin
Seagull
Lobster
Ant
Cockroach
Housefly
Great Horned Owl
Mouse
Termite
Skunk
Irish Setter
Wolf Spider
Bat
Spider Monkey (unusable: Sario Rip morph*)
Jaguar (unusable: Sario Rip morph*)
Llama
Horse
Parrot
Hammerhead Shark
Mole
Mosquito
Leeran
Tyrannosaurus Rex (unusable: Sario Rip morph**)
Cobra (Spawn)
Rhinoceros
Anteater
Seal
Polar Bear (Nanook)
Giant Squid
Chimpanzee
Eel
Human (Mr. Grant)
Mountain Goat
Hork-Bajir
Squirrel
Cockatiel
Toy Poodle (Euclid)
Orca (Swoosh)
Cheetah
Honey Bee
Hork-Bajir
Morphs Acquired in Kannagara:
Yoma (unusable - herenth illint morph; allergic)
*I've decided that Marco will not use Jaguar and Spider Monkey morphs because he has no memory of what has happened in the Forgotten, if I understand the mumbo-jumbo science of Book 11 correctly, as it was more of Jake's personal Sario Rip than the actual Animorphs'.
**However, I decided that Marco can use the T-Rex morphs because, LOL THOSE FUNNY GODS and also because 1)Marco remembers that side-adventure easily and 2)Man, he's so overpowered by some of the characters in game I believed it's perfectly in order for him so have an morph that may or may not give him an edge.