Fig. 59 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 59. The tibiotarsus of Ichthyornis dispar (YPM 1450, YPM 1732) and Iaceornis marshi (YPM 1734): (A) the proximal left tibiotarsus of the Ichthyornis dispar holotype (YPM 1450) in anterior, posterior, and proximal views (left to right); (B) the distal right tibiotarsus of the Ichthyornis dispar holotype (YPM 1450) in anterior view; (C) the distal left tibiotarsus of a specimen referred to Ichthyornis dispar (YPM 1732) in anterior view; (D) the distal right tibiotarsus of the Iaceornis marshi holotype specimen (YPM 1734) in anterior view.