Figure 8 in On the manual morphology of Compsognathus longipes and its bearing on the diagnosis of Compsognathidae

Figure 8. Unguals preserved on Compsognathus slab. A, left digit I ungual, showing robust, deep flexor tubercle. B, right digit I ungual (in articulation) showing deep, robust flexor tubercle as in A. C, left digit II ungual (in articulation) showing more gracile flexor tubercle. D, right digit II ungual medial impression (mirrored for comparison) showing shallow, gracile flexor tubercle as in C.