Darren Naish brings an interesting paper to our attention: a claim that over 400 new mammal species have been discovered since 1993. While 60% of these were formerly classified within another species (i.e. were cryptic species), the remainder are apparently brand-spanking-new. Wander on over to Darren’s post for further details and discussion.
The paper in question is: Ceballos, G. & Ehrlich, P. R. 2009. Discoveries of new mammal species and their implications for conservation and ecosystem services. Proceedings of the National Academy of Sciences 106, 3841-3846 (link)