Table 1.
Details of nine wing bone specimens from numerous pterosaurs where WP indicates wing phalanx.
Figure 1.
CT scan images from two different regions of pterosaur first wing phalanx.
A and B show the unmodified CT scans from A) the distal end of UP WP1 and B) the mid-shaft of UP WP1, while C and D show the modified and corrected images used in the calculation. Air space proportion (ASP) is calculated by determining the cross-sectional area of the internal, air filled cavity (the black centre of D) and dividing that by the total cross-sectional area, including the white cortical tissue and the black cavity. In areas with trabeculae, like C, the calculation of the air space includes the air found in individual trabeculae around the edges. Scale = 10 mm.
Figure 2.
Plot of air space proportion over the length in six pterosaur wing bones.
These plots show a polynomial line fit for each bone to show the general shape distribution. Exact measurements can be seen in Table S1.
Table 2.
Values of Air Space Proportion in nine pterosaur wing bones.
Table 3.
ASP values from previous studies.