Line drawings of the holotype skull of Spatulidentatus breviceps (GMG10) as preserved in its flattened and distorted state. At left is a grayscale version indicating general regions and anatomy (skull [upper jaw, skull roof, mandible], teeth, palate, and cervical bones), with the external nares (ext. nares) and orbit labeled. At right is a color-coded version distinguishing each skull bone with a different color. Both skulls are to the same scale; scale bar=5 cm.