Editing Protoavis (section)

====Pectoral girdle====
The pectoral girdle is discussed by Chatterjee as being highly [[Synapomorphy|derived]] in ''Protoavis'', displaying synapomorphies of avialans more derived than ''Archaeopteryx'', including the presence of a [[hypocleidium]]-bearing [[furcula]], and a hypertrophied, [[carinate]] [[sternum]]. Chatterjee's interpretation of the fossils identified as such in his reviews of the ''Protoavis'' material<ref name="Chatterjee1997" /> are open to question due to the preservation quality of the elements and as of this time, it is not clear whether either character was in fact present in ''Protoavis''.<ref name="Chiappe1995" /> The [[glenoid]] appears to be oriented dorsolaterally permitting a wide range of humeral movement. Chatterjee implies that this is a highly derived trait which allies ''Protoavis'' to [[Aves]],<ref name="Chatterjee1997" /> but why this should be so is not clearly discussed in the descriptions of the animal. In and of itself, the orientation of the [[glenoid]] is not a sufficient basis for placing ''Protoavis'' within [[Aves]]. The scapular blade is far broader than illustrated by Chatterjee in his 1997 account,<ref name="Chatterjee1997" /> and not particularly avian in its gross form.<ref name="Paul2002" /> The [[coracoid]], identified by Chatterjee as strut-like and retroverted, is, like the supposed furcula and sternum, too poorly preserved to permit accurate identification. Moreover, the original spatial relationship of the alleged coracoid to the scapula is entirely unknown.<ref name="Ostrom1996" /><ref name="Paul2002" /> [[Uncinate processes of ribs|Uncinate processes]] and sternal ribs are missing.