 Along with "Onychonycteris", "Icaronycteris", "Hassianycetris", and "Archaeonycteris"; members of "Palaeochiropteryx" are among the oldest known bats.All are identifiable by more or less complete skeletons.While there are fossils of other older bats such as "Australonycteris", these are only recognisable from fragmented examples.