Senter et al. (2004:7) mentioned Microraptorinae as a potential name for the taxon they ultimately named Microraptoria, which consists of Microraptor, Bambiraptor, and Sinornithosaurus. They set Microraptorinae in quotes, because they were concerned about its potential inclusion in other familial or subfamilial taxa within Dromaeosauridae.
This possibility, however, is easily controlled by including two additional external specifiers as is done in this compilation. Employing the subfamilial name is appropriate, as most analyses have placd Microraptor within Dromaeosauridae. In the unlikely possibility that Microraptor is positioned outside Dromaeosauridae, the subfamily will function in almost any concievable placement.
The active definition presented here is considered new with this compilation, as it is the first definition to be applied to Microraptorinae. There is a first-order difference between this definition and that provided by Senter et al. (1999) for Microraptoria. Authorship of the taxon, however, is attributable to Senter et al. (1999) irrespective of the surrounding quotes.