The same conclusion was also reached independently from Senter by Turner, Makovicky and Norell (2012). According to these authors, NGMC 91 shares several apomorphies with both "Microraptor zhaoianus" and "Sinornithosaurus millenii"; however, as it "lacks elongate middle caudals that are three to four times the length of the dorsal vertebrae", it cannot be referred to "M. zhaoianus". On the other hand, it does possess a posteriorly bifurcated dentary, which is an apomorphy of "Sinornithosaurus". The authors concluded that NGMC 91 was a subadult specimen of "S. millenii".