The biodiversity of land-dwelling crocodiles and their closest relatives has been shown to correspond to global climate. This is particularly pronounced during the late Neogene (7 – 2.5 million years ago) when global climate continually cooled until the onset of significant northern hemisphere glaciations at 2.5 million years ago. What would be interesting is that at a finer temporal resolution the Neogene shows many intervals of increased global temperatures; do crocodylians respond to these by expanding their ranges into the temperate regions of the world?