Summary of quantitative morphotypes showing their stratigraphic ages.
Each tooth icon likely represents a distinct taxon with the indicated known range based on formation as observed in this study. A, Lancian Saurornitholestinae gen. et sp., UCMP 187036 (reversed); B, Pectinodon bakkeri; C, Lancian cf. Richardoestesia gilmorei, UCMP 120255 (reversed); D, Lancian cf. Richardoestesia isosceles, UCMP 187175 (reversed); E, Atrociraptor marshalli, TMP 2000.045.0035; F, Horseshoe Canyon Dromaeosaurinae gen. et sp., TMP 1999.050.0116 (reversed); G, Horseshoe Canyon cf. Troodon sp., TMP 2000.045.0024 (reversed); H, Horseshoe Canyon cf. R. gilmorei, TMP 2003.015.0002; I, Saurornitholestes langstoni, TMP 1995.147.0026; J, Bambiraptor feinbergi, AMNH FR 30556; K, Dromaeosaurus albertensis, TMP 1986.130.0211; L, Zapsalis abradens, TMP 1987.050.0008; M, Troodon formosus, TMP 1995.147.0025; N, Dinosaur Park cf. Pectinodon sp., TMP 2000.021.0001; O, Richardoestesa gilmorei, TMP 2000.019.0004; P, Oldman cf. R. gilmorei, 1987.080.0035; Q, Richardoestesia isosceles, LSUMGS 489∶6238 (reversed); R, Milk River Saurornitholestinae gen. et sp., UALVP 50531 (reversed); S, Milk River Dromaeosauridae gen. et sp., UALVP 48365 (reversed); T, Milk River Dromaeosaurinae gen. et sp., UALVP 49571; U, Milk River cf. Zapsalis sp., UALVP 49582; V, Aquilan cf. Richardoestesia gilmorei, UALVP 48157 (reversed); and W, Aquilan cf. Richardoestesia isosceles, UALVP 48279 (reversed). B modified from Longrich (2008); H modified from Larson et al. (2010); J modified from Burnham (2004); P modified from Sankey et al. (2002); Q modified from Sankey (2001); R–W modified from Larson (2008). Teeth scaled to matching FABL. [full page width].
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