Closing the Cat Gap

Nimravid Phylogeny

Paul Barrett’s paper is out showing that the Cat Gap may be more taphonomic than evolutionary. His phylogenetic analysis of feliform carnivores shows that Barbourofelis and its relatives, previously thought to be an independent derivation of sabertoothed habits, are actually nested well within the Nimravidae. This finding indicates that the Early Miocene gap between the last occurrence of non-barbourofeline nimravids and the first occurrence of barbourofelines is not a time period when the Holarctic was without a cat ecomorph, but rather a period when those ecomorphs are not preserved. Biogeographic analysis suggests that the missing fossils may be European or, more likely, African. At least now we know where and when to look for them!