1134


Journal of Paleontology


Figure 4. Summary of results: (1) hierarchical cluster diagram of mesowear signatures of our samples plus 27 extant model species with known diet; (2) mesowear univariate scores of 50 extant model species with known dietary preferences against Bison antiquus samples from previous studies; (3) mesowear III scores of extant model species and our samples; (4) canonical plot of the discriminant analysis combining extended mesowear univariate signatures with mesowear III signatures. Color code: red=grazers; orange=nonstrict grazers; green=mixed feeders; blue=browsers. AA=Alces alces (Linnaeus, 1758); ab=Alcelaphus buselaphus; BaBC=Bison antiquus from Blackwater Draw, Clovis Pit, Curry County, New Mexico; BaBD=B. antiquus from Blackwater Draw, Dry Cave, and Dark Canyon Cave, New Mexico, and Lubbock Lake and Scharbauer Ranch, Texas (Barrón-Ortíz, 2016); BaFQ=B. antiquus from Folsom Quarry, New Mexico (Rivals et al., 2007b); BaIP=B. antiquus from Ingleside, San Patricio County; BaLC=B. antiquus from La Cinta-Portalitos; BaLP=B. antiquus from La Piedad-Santa Ana; BaPV=B. antiquus from Plainview Quarry, Hale County, Texas (Rivals and Semprebon, 2012); BaVV=B. antiquus from Viko Vijin; Cc=Cervus canadensis (Erxleben, 1777); cs=Ceratotherium simum (Burchell, 1817); Cs=Capricornis sumatraensis (Bechstein, 1799); ct=Connochaetes taurinus;DB=Diceros bicornis (Linnaeus, 1758); dl=Damaliscus lunatus (Burchell, 1824); DS=Dicerorhinus sumatrensis (Fischer, 1814); eg=Equus grevyi;Et=Eudorcas thomsonii (Günther, 1884); eq=Equus quagga Boddaert, 1785; GC=Giraffa camelopardalis (Linnaeus, 1758); he=Hippotragus equinus (Desmarest, 1804); hn=H. niger (Harris, 1838); ke=Kobus ellipsiprymnus;Me=Aepyceros melampus (Lichtenstein, 1812); Ng=Nanger granti (Brooke, 1872); OH=Odocoileus hemionus (Rafinesque, 1817); OJ=Okapia johnstoni (Sclater, 1901); Om=Ovibos moschatus (Zimmermann, 1780); OV=Odocoileus virginianus (Zimmermann, 1780); PBb=plains bison, B. bison;rr=Redunca redunca (Pallas, 1767); RS=Rhinoceros sondaicus (Desmarest, 1822); To=Taurotragus oryx (Pallas, 1766); Ts=Tragelaphus scriptus (Pallas, 1766); WBb=wood bison, B. bison.


significant differences between the scores of La Cinta-Portalitos and the grazer (p=0.54) and mixed feeder (p=0.1) guilds, but there were differences with the browser guild (p<0.0001). As for the scores of La Piedad-Santa Ana, we found no statistically significant differences between the mesowear III scores and the


The mesowear III analysis (Fig. 4.3) showed no statistically


grazer guild (p=0.75), but we found differences with the mixed feeder (p=0.02) and browser (p<0.0001) guilds. The Viko Vijin scores showed no statistically significant differences with the mixed feeder guild (p=0.6), but statistically significant differences with the grazer (p=0.01) and browser (p<0.0001) guilds.


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