Short one today,
both in text length and taxon height.
Bambiraptor feinbergi (Burnham et al. 2000; Late Cretaceous, AMNH FR 30556) was originally considered a juvenile Sauronitholestes. The brain size is the largest among Mesozoic dinosaurs. Here it nests basal to Velociraptor + Balaur in the large reptile tree (LRT, 1724+ taxa, subset Fig. x). Proportions are closer to Arachaeopteryx according to the authors.
at Zanazabar soon.
Burnham DA, Derstler KL, Currie PJ, Bakker RT, Zhou Z and Ostrom J H 2000. Remarkable new birdlike dinosaur (Theropoda: Maniraptora) from the Upper Cretaceous of Montana. University of Kansas Paleontological Contributions 13: 1-14.