Lingham-Soliar, T. 2009. Dinosaur protofeathers: pushing back the origin of feathers into the Middle Triassic? Journal of Ornithology. doi: 10.1007/s10336-009-0446-7. ABSTRACT: [...] The notion that primordial feathers occurred in a clade more inclusive than the Coelurosauria and that it is supported by the presence of integumental structures in Psittacosaurus is analyzed and rejected.
Ten Euro-cents sez the manuscript was accepted the day before *Tianyulong* was published. Any takers?