Wikipedia
The Yinpterochiroptera, or Pteropodiformes, are a proposed suborder of the Chiroptera, which includes the megabats and five of the microbat families: Rhinopomatidae, Rhinolophidae, Hipposideridae, Craseonycteridae, and Megadermatidae. This taxon is primarily based on molecular genetics data. This is a relatively recent proposal, which challenges the traditional view that megabats and microbats form monophyletic groups of bats. Further studies are being conducted, using both molecular and morphological cladistic methodology, to assess its merit.
The term Yinpterochiroptera is constructed from the words Pteropodidae (the family of megabats) and Yinochiroptera (a term proposed in 1984 by Karl F. Koopman to refer to certain families of microbats).
Apparently the first appearance of the term Yinpterochiroptera was in 2001, in an article by Mark Springer et al.
As an alternative to the subordinal names Yinpterochiroptera and Yangochiroptera, some researchers use the terms Pteropodiformes and Vespertilioniformes. Under this new proposed nomenclature, Pteropodiformes is the suborder that would replace Yinpterochiroptera.