What is Lythronax?
{{italictitle}} {{Automatic taxobox | fossil_range = [[Late Cretaceous]], {{Fossil range|80.6|79.9}} | image = Lythronax mount at TyrannosaursMeettheFamily.jpg | image_caption = Reconstructed skeleton alongside those of other [[tyrannosaurs]], [[Science Center of Iowa]] | image_alt = Photo of a right-facing mounted skeleton with its skull turned to the right, in front of several other tyrannosaur skeletons | taxon = Lythronax | authority = Loewen ''et al.'', [[2013 in paleontology|2013]] | type_species = {{Extinct}}'''''Lythronax argestes''''' | type_species_authority = Loewen ''et al.'', 2013 }} '''''Lythronax''''' is an [[extinct]] [[genus]] of [[tyrannosaurid]] [[theropod]] [[dinosaur]]. It lived about 80 million years ago (mya) in what is now southern [[Utah]]. ''L. argestes'' is the oldest known tyrannosaurid based on its [[stratigraphy|stratigraphic]] position.<ref name=Loewen> Loewen M.A. ''et al'' (2013). Tyrant dinosaur evolution tracks the rise and fall of late Cretaceous oceans. In Evans, David C. ''PLoS ONE'' '''8''' (11): e79420. [http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0079420]</ref> Comparisons to [[Tyrannosauridae|its close relatives]] suggest that ''Lythronax'' would have been about {{Convert|8|m|ft|1|abbr=on}} long, with a weight of around {{convert|2.5|t|lb}} and had a large [[skull]] filled with sharp teeth.<ref name=Lyt>{{cite web|title=''T. rex'' gets a new relative: ''Lythronax argestes'', gore king of the south|url=http://www.walkingwithdinosaurs.com/news/post/lythronax-argestes-gore-king-south-tyrannosaurus/|work=Walking with dinosaurs|publisher=David Hone|accessdate=6 November 2013|archive-date=8 November 2013|archive-url=https://web.archive.org/web/20131108022608/http://www.walkingwithdinosaurs.com/news/post/lythronax-argestes-gore-king-south-tyrannosaurus/|url-status=dead}}</ref> The rostrum<ref>front part of skull</ref> is comparatively short: it makes up less than tw