FIGURE 11 in Redescription of soft tissue preservation in the holotype of Scaphognathus crassirostris (Goldfuss, 1831) using reflectance transformation imaging

FIGURE 11. Close-up RTIViewer snapshots of the region enclosed by the articulation of the humerus with the zeugopodial bones of the right wing and the deltopectoral crest of the humerus on the counter slab, taken under different lighting conditions, but all processed using the specular enhancement mode (except 11A and 11E). Scale bar for all illustrations equals 10 mm. Markings for various soft part impressions used throughout this Figure: red lines illustrate the path of the impressions and their orientation to each other and a red ellipse marks the longest blood vessel. 11A. The geometrically organised soft parts ventral to the deltopectoral crest of the humerus (uppermost left corner) and the zeugopodial bones of the right wing (lower margin). Note the distinct crossing of the two thick main branches (red circle in 11A and 11B). The arrangement of these impressions of a soft tissue type that cannot be determined with absolute certainty, but very probably once belonging to the Patagium reminds of the arrangement of the main vessels in the complex vessel system in the Rhamphorhynchus specimen JME SOS 4784 (Tischlinger and Frey, 2002; Frey et al., 2003). In this specimen, a large main vessel serves as an attachment point for side channels branching off from it at more or less right angles. 11B. Interpretative drawing of 11A. 11C-11D. Specular enhancement images of Figure 11A under different lighting conditions. The soft part impressions likely representing former patagium vessels appear either as elevations (11C) or as grooves (11D). The parallel arrangement of some side branches is confirmed under all lighting conditions, suggesting its interpretation as part of the patagium. 11E. The longest, unbranched and strongly bifurcated blood vessel (red circle in 11E). 11F-11G. The appearance of the pit-like depressions already shown in Figure 10 associated with the blood vessels.