The heliographer: Antelope
Original American livestock: Buffalo; Muskox; Bighorn; Mountain goat
Survivors of ancient orders: Opossum; Armadillo
The insect hunters: Mole; Shrew
The bear's small cousins: Raccoon; Coati; Ringtail
The finfeet: Fur seal; Sea lion; The earless seals; Sea elephant; Walrus
The 'chucks and ground squirrels
The chipmunks and squirrels
The hares and rabbits: Pika; Varying hare; Arctic hare; Jack rabbit; Cottontail rabbit
The vanishing mermaid: The manatee
Two seafarers: The whale; The dolphin.