Guinea pig wiki:
all>Fossil Range: Middle Pleistocene - Recent Cavia porcellus Cavia aperea Cavia tschudii Cavia guianae Cavia anolaimae Cavia nana Cavia fulgida Cavia magna Cavia intermedia Guinea pigs (also called cavies) are rodents belonging to the family Caviidae and the genus Cavia. Guinea pigs are classified in order Rodentia, although there is a minority belief in the scientific community that evidence from mitochondrial DNA indicates that the Hystricognathi may belong to a different evolutionary offshoot, and therefore a different order.[1]
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