The 1^th through 13^th presacral vertebrae preserved in the <i>Zhuchengceratops inexpectus</i> holotype (ZCDM V0015).

<p>The 1^st through 8^th presacral vertebrae in dorsal (A) and ventral (B) views; the 9^th through 13^th presacral vertebrae in left lateral (C), right lateral (D), ventral (E), and dorsal (F) views.</p

Right maxilla, jugal, quadratojugal, ectopterygoid, and mandible of <i>Zhuchengceratops inexpectus</i> holotype (ZCDM V0015).

<p>Right maxilla and mandible in dorsolateral (A), lateral (B), and medial (C) views; right jugal, quadratojugal, and quadrate in lateral (D) and medial (E) views. Abbreviations: ap, articular facet for pterygoid; bc, buccal crest; ch, chamber within coronoid process; cn, coronoid; cp, coronoid process; de, dorsal embayment; f, fossa; fl, flange; g, groove; itf, infratemporal fenestra; ml, medial lamina; ob, orbit; pde, posterodorsal expansion; pp, postorbital process; ppm, posterior process on maxilla; r, ridge; ra, right angular; rd, right dentary; rm, right maxilla; ss, strap-like surface; ve, ventral embayment.</p

Suggested systematic position of <i>Zhuchengceratops inexpectus</i> among the Ceratopsia.

<p>A, the strict consensus of three most parsimonious trees produced by our analysis of Makovicky's (2010) matrix with <i>Zhuchengceratops inexpectus</i> added in; B, the strict consensus of six most parsimonious trees produced by our analysis of Chinnery and Horner's (2007) matrix with <i>Zhuchengceratops inexpectus</i> added in. Bremer support and bootstrap values are labeled (bootstrap values below 50% are not shown).</p

<i>Zhuchengceratops inexpectus</i> holotype (ZCDM V0015).

<p>Line-drawings of <i>Zhuchengceratops inexpectus</i> holotype as preserved (A), and of left side of skull and mandible in lateral (B) and medial (C) views. The gray area in (A) represents the impression on the matrix made by the right maxilla. Abbreviations: a, angular; ar, articular; cn, coronoid; cv, cervical vertebrae; dv, dorsal vertebrae; ep, ectopterygoid; hb, hyoid bone; imf, internal mandibular fossa; jqq, jugal-quadratojugal-quadrate;ld, left dentary; m, maxilla; md, mandible; mg, Meckelian groove; mp, mandibular process; pd, predentary; pra, prearticular; q, quadrate; rd, right dentary; sa, surangular; sk, skull; sp, splenial.</p

Selected measurements (in cm) of ZCDM V0015.

<p>*estimated length.</p>#<p>incomplete measurement.</p><p>all centrum heights were measured at the posterior end.</p

Left maxilla, pterygoid, ectopterygoid, and mandible of <i>Zhuchengceratops inexpectus</i> holotype (ZCDM V0015).

<p>Left maxilla, pterygoid, ectopterygoid, and mandible in dorsal (A), lateral (B), and medial (C) views; D, a pair of hyoid bones. Abbreviations: a, angular; bc, buccal crest; cn, coronoid; cp, coronoid process; ec, “Eustachian canal”; ep, ectopterygoid; f, fossa; g, groove; imf, internal mandibular fossa; lc, lateral condyle; mc, medial condyle; mg, Meckelian groove; mlp, mid-line process; mp, mandibular process; mr, maxillary ramus; pd, predentary; q, quadrate; qr, quadrate ramus; r, ridge; sa, surangular; sd, supradentary; sp, splenial; vp, ventral process; vr, ventral ridge.</p

Preserved dorsal ribs of <i>Zhuchengceratops inexpectus</i> holotype (ZCDM V0015).

<p>Anterior dorsal ribs at bottom and posterior dorsal ribs at top.</p

Dentition of <i>Zhuchengceratops inexpectus</i> holotype (ZCDM V0015).

<p>Two anterior-middle (A), two middle (B), and two posterior (C) right maxillary teeth in labial view; D, two middle left maxillary tooth roots in cross-section; E, three anterior right dentary teeth in lingual view; F, two anterior left dentary teeth in labial view; G, two middle right dentary teeth in lingual view; H, three middle-posterior right dentary teeth in lingual view; I, two posterior left dentary teeth in lingual view. Not to scale.</p

Scorings for <i>Zhuchengceratops inexpectus</i>.

<p>Scorings for <i>Zhuchengceratops inexpectus</i>.</p