Comparison of morphology in UW 88–886 (left), <i>P</i>. <i>angusticeps</i> males (CO 100, center), and <i>P</i>. <i>izodi</i> males (TP 89-11-1, right).

<p>Top: Lateral view, specimens scaled to approximately the same cranial height. Note the tall malar region (black bar), prominent maxillary ridges and deep maxillary fossae (white arrows) in UW 88–886 and <i>P</i>. <i>angusticeps</i> compared with <i>P</i>. <i>izodi</i>. Bottom: Dorsal view, specimens scaled to approximately the same cranial width. Note the longer, narrower muzzle in <i>P</i>. <i>angusticeps</i> compared to <i>P</i>. <i>izodi</i>, and again the prominent maxillary ridges and deep maxillary fossae in UW 88–886 and <i>P</i>. <i>angusticeps</i> compared with <i>P</i>. <i>izodi</i>.</p>