Paleo-News

A new primitive Tyrranosauroid has been described. This time it has a crest on it's head reminiscent of a pterosaur. They're calling it Guanlong wucaii. As with other crested theropods, the standing hypothesis is that the crest was used for sexual display. Furthermore, following recent trends in popular analysies to do on specimens, a histological thin section was made of the (presumably) fibula and was used to determine that this animal was in its 12th year of life, while another specimen found associated with it was only 1/2 as old. Unfortunately, this discover, as well as others, came too late to make it into the most recent edition of the Dinosauria and will likely not be added as an adendum to The Relationships of Basal Theropod Dinosaurs.