A Diminutive New Tyrannosaur from the Top of the World
One of three equally most parsimonious hypotheses of tyrannosauroid phylogeny (length = 550; consistency index = 0.6527; retention index = 0.8403) recovered in our analysis based on dataset of Brusatte et al. , and set to the geologic timescale. Thick bars indicate uncertainty of geological range for a given taxon. Numbers at nodes are Bremer support values for that clade. Open circle indicates node-defined clade name. Half-circle arc indicates a stem-defined lineage name. Dates for geologic stage boundaries from .