Fig. 1 in Can maxillary canal morphology inform varanopid phylogenetic affinities?

Fig. 1. Lateral view of the maxillary canal in left lateral view. A. Orovenator mayorum Reisz, Modesto, and Scott, 2011 (OMNH 74606) from the lower Permian of the Dolese Brothers Limestone Quarry (Oklahoma, USA). B. Prolacerta broomi Parrington, 1935 (UCMP 7151, mirrored for comparison) from the Lower Triassic of Big Bank (Harrismith District, South Africa). C. Heleosaurus scholtzi Broom, 1907 (CG­RMS353) from the middle Permian of South Africa. D. Varanosaurus acutirostris Broili, 1904 (FMNH PR 1670) from the lower Permian Wellington Formation (Garvin County, Oklahoma, USA). The maxillary canal is in green, the maxillary sinus is in purple, and the skull is transparent. Circles represent the position of a structure not visible in lateral view. Abbreviations: 1, conical cavity; 2, main trunk of the maxillary canal; 3, caudal section of the maxillary canal; 4, caudally extended side branches.