dc:description"FIG. 2. — Stratigraphy of the Purisima Formation: A, Stratigraphic column of the San Gregorio section of the Purisima Formation (in meters), showing stratigraphic position of UCMP vertebrate localities, dated ash beds, diatom floras, and species of Carcharodon; thickness measurements start over above missing section in uppermost part due lack of overlapping strata; epoch and stage boundaries marked as \"?\" are estimated; modified from Boessenecker (2011a); Pliocene-Pleistocene boundary after Hilgen et al. (2012); B, photograph of 3-4 m thick ash within Purisima Formation at mouth of San Gregorio Creek correlated with 2.5 Ma Ishi Tuff (Powell et al.2007); C, trace fossils in pervasively bioturbated sandstone,Purisima Formation,mouth of San Gregorio Creek; D, swaley cross-stratified sandstone, mouth of San Gregorio Creek. Abbreviations: Qt, Pleistocene terrace deposits; Tp, Purisima Formation; C, claystone; St, siltstone; Ss, sandstone. Scale bars: A, 2 m; B, C, 10 cm.";
dc:description"FIG. 7. — Skeletal elements of Callorhinus sp., cf. C. gilmorei: A, UCMP 219147, right upper third incisor, in lateral view; B, UCMP 219147 in lingual view; C, UCMP 219147 in mesial view; D, UCMP 219147 in basal view; E, UCMP 219003, fragment of lower canine in lingual view; F, UCMP 219003 in labial view; G, UCMP 86297, partial left humerus in anterior view (deltopectoral crest partially reconstructed); H, UCMP 86297 in lateral view; I, UCMP 86297 in posterior view; J, UCMP 86297 in medial view. Scale bars: 1 cm.";
dc:description"FIG. 8. — Radii of Callorhinus sp., cf. C. gilmorei: A, UCMP 219139, right radius in lateral view; B, UCMP 219139 in medial view; C, UCMP 219138, partial right radius in lateral view; D, UCMP 219138 in medial view. Scale bar: 3 cm.";
dc:description"FIG. 9. — Tarsal elements of Callorhinus sp., cf. C. gilmorei: A, UCMP 219122, right calcaneum in dorsal view; B, UCMP 219122 in plantar view; C, UCMP 219122 in medial view; D, UCMP 219149, left astragalus in dorsal view; E, UCMP 219149 in plantar view. Scale bar: 3 cm.";