Our data set has six different genes and 8600 base pairs. The results published in Nature indicate that those groups should remain together, in contrast to previously published molecular results. The rodents, including the guinea pig, belong together. And rabbits probably do go with rodents. On the other hand, a group known as Archonta should be split apart according to Springer et al.
Bats are somewhere completely different.
They're closer to pigs and cows than rodents and primates. Even though all this information can rapidly become confusing, the biologists have a very simple explanation for the divergence and resulting evolutionary tree. The relationships that evolved in fact closely parallel the movement of continental landmasses during geologic time. That's why Springer named one group Afrotheria, for its African origins, and another Laurasiatheria, after the land mass which gave rise to North America - Europe and Asia. One in the southern hemisphere and the other in the northern hemisphere.