The I-Spyder Book of Earth Creatures was an electronic book of creatures.
The publication looked like a slim plastic slab. It listed every known animal species from the history of Earth using their binomial nomenclature designation. Points were given for each animal spotted, and when someone spotted enough creatures to gather nine million points, Big Chief I-spyder sent the person a certificate. Martha Jones managed to gain this certificate by going to the Museum of the Last Ones. (PROSE: The Last Dodo)
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