Pectinodon

Pectinodon is a genus of troodontid theropod dinosaurs from the end of the Maastrichtian age of the Late Cretaceous period (66 mya). It currently contains a single valid species, Pectinodon bakkeri (sometimes classified as Troodon bakkeri), known only from teeth. History of discovery In 1982, Kenneth Carpenter named a number of theropod teeth from the late Maastrichtian aged Lance Formation of Wyoming as the type species Pectinodon bakkeri. The generic name is derived from the Latin word pecten, meaning "comb", and the Greek word ὀδών, odon, meaning "tooth", in reference to the comb-like serrations on the rear edge of the teeth. The specific name honors famed paleontologist Robert Thomas Bakker. The holotype, UCM 38445, consists of a 6.2 mm long adult tooth. The paratypes are three juvenile teeth. In 1985, Lev Nesov named a second species, Pectinodon asiamericanus, based on specimen CCMGE 49/12176, a tooth from the Khodzhakul Formation of Uzbekistan that dates from the Cenomanian age. This is today often considered a nomen dubium.