Basically if bats are the Omega, this taxon is the Alpha
with nothing that I know in between.
Well, a recent SVP meeting abstract mentions a very early bat with claws on
all 5 fingers, so we have a psi or chi in front of that omega... :o)
A good molecular and morphological taxon, by the way.
So... extant? But Dermoptera is not it, and all (!) molecular trees say bats
don't have any closer living relatives than Fer-eu-ungulata as a whole? Does
this leave anything?