Fig. 45 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 45. The sternum of Ichthyornis dispar. The holotype specimen (YPM 1450) sternum in (A) dorsal view and (B) as represented by Marsh (1880) as well as two steri from referred specimens (C) YPM 1461 and (D) BMNH A905 in left lateral view. The location of a large midline pneumatic foramen shown in ''A'' is indicated with an arrow in ''B''.