For example, the comparatively reduced femoral trochanter and patella of UNSM 20030 would limit the area available for the attachment of several muscles (i.e., the lateral and medial obturatorius, medial and cranial iliotrochantericus, medial femorotibialis, and medial gastrocnemius) crucial to orienting the hindlimb for the power stroke and providing propulsive force during diving [12 ], thus possibly limiting the speed of Fumicollis hoffmani.