Complex sentence: The cranium is bulbous and taller than the snout, a feature shared with woolly bats and mouse-eared bats and probably present in the common ancestor of the vesper bats.
Split into simpler sentences: The cranium is bulbous and taller than the snout, a feature shared with woolly bats and mouse-eared bats. This combination of features was likely present in the common ancestor of the vesper bats.