Not all of these were discovered in 2013, some were several years ago. And the striped bat Niumbaha superba was first collected in 1939; it's just that this year a new specimen allowed them to reclassify it as a new genus.
That's what's most interesting to me: that several of these animals are not just new species, but new genera. That means they're even more surprising, more different from previously attested animals. Besides the bat, there's the two-legged lizard Jarujinia. Also, the two-legged Sirenoscincus is only the second species in a genus first described just 9 years ago.
Looking around, it seems that the most recent higher-level taxon discovered was Concentricycloidea, in 1986--currently listed as an infraclass. So there's still plenty out there to go. Awesome stuff!