This image shows a posterior view of the
skeleton of a bullfrog. Aspects of the vertebral
column and pelvic girdle that are visible
include the first cervical vertebra that is
called the atlas (1), the sacral vertebra whose
transverse processes form the sacrum (2), the
ilium (3), the ischium (4) and the urostyle (5).
As shown in the image, each hind limb is
composed of a stout femur (6) and tibiofibula
(7), two tarsal bones called the calcaneus (8)
and the astragalus (9), the metatarsals (10) and
distal bony elements called phalanges (11).
The suprascapula (12) and scapula (13) of the
pectoral girdle are visible as well as the
humerus (14) of each the forelimb.