De acordo com TNG: New Ground , várias espécies proeminentes da Terra foram extintas no dia 21 e Século 22
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Draco Lizards
KYLE: The eating habits of Gilvos are very similar to those of Earth's Draco lizards, which died out over three hundred years ago...
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Rinocerontes Brancos
KYLE: ... as the value of their horns increased, the number of white Rhinos in the wild kept falling until they finally became extinct about two centuries ago.
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No século 23 ( TOS: Man Trap ), o Buffalo foi apenas uma memória
SPOCK: The Earth buffalo. What about it?
CRATER: Once there were millions of them prairies black with them. One herd covered three whole states, and when they moved they were like thunder.
SPOCK: And now they're gone. Is that what you mean?
