FIGURE 1 in The anatomy and diversity of the pterosaurian sternum

FIGURE 1. The sterna of adult individuals of A) the non-pterodactyloid Rhamphorhynchus (based on Wellnhofer, 1975) and B) the pterodactyloid Pteranodon (based on Bennett, 2003). These are seen in i) dorsal, ii) lateral and iii) ventral views. Abbreviations here and throughout are: af, articulation facet; ca, coracoid articulation; cr, cristospine; pf, piercing foramen; pn, pneumatopore; rd ridge (or keel); sp, sternal plate; tb tubercle; xa, xiphoid articulation. Scale bars are A 10 mm and B 50 mm.