This is a short trip through DGS using the YH2000 specimen of Darwinopterus (more completed than the holotype, but with a poorly preserved skull, (Lü et al. 2009). Crushed flat and spread eagle, one wonders whether this is a ventral or dorsal view. Without a prominent sternal complex and with such dark bones, it’s hard to tell at first glance (Fig. 1).
The first thing we’ll do is play with the exposure to bring out the bones better (Fig. 2). Now we can see the scape are below the ribs.
Next we’ll add a layer in Photoshop and colorize the elements we’re interested in.
The final step ghosts back the original image to bring out the tracings better. There’s the sternal complex, broken in two and tiny. Maybe parts are missing here. Prepubes in pink. One broken. A few drifted ventral pelvis parts here.
The final step is to apply your tracings to a reconstruction.
Earlier we looked at Darwinopterus here.
Lü J, Unwin DM, Jin X, Liu Y and Ji Q 2009. Evidence for modular evolution in a long-tailed pterosaur with a pterodactyloid skull. Proceedings of the Royal Society London B (DOI 10.1098/rspb.2009.1603.)