carpus 
Portion of the pectoral fin formed of short bones between the radius, the ulna and the metacarpus.
rib 
Thin curved bone articulating with the vertebral column and the sternum.
vestigial pelvis 
Rudimentary bone resulting from the reduction of the pelvis and posterior limbs located in the muscle mass.
humerus 
Short bone of the pectoral fin articulating with the scapula, the radius and the ulna.
vertebra 
Bony part of the dorsal portion of the body mainly supporting the ribs; all the vertebrae together form the vertebral column.
scapula 
Large thin flat bone connected to the vertebral column and allowing the pectoral fin to move.
orbit 
Bony cavity of the upper lateral potion of the head containing the eye.