. Brigham Young University science bulletin. Biology -- Periodicals. 14 Bbigham Young University Science Bulletin CONSTRICTOR COLLI -EPISTERNOCLEIDOMASTOIDEUS -CLAVODELTOIDEUS r ANCONAEUS HUMERALIS LATERALIS. IL ANCONAEUS SCAPULARIS lLANCONAEUS CORACOIDEUS L-CORACOBRACHIALIS LONGUS -TRAPEZIUS LATISSIMUS DORSI Fig. 10. Phrynosoma platyrhinos platyrhinos. Dorsal view of head and thorax musculature. Left Half: superficial layer. Right Half: first depth. BYU 14838, 22833, 22823, 22840, 22832, 22830, 22861. X face by a tendon which extends laterally be- tween the subscapularis II and the scapu
. Brigham Young University science bulletin. Biology -- Periodicals. 14 Bbigham Young University Science Bulletin CONSTRICTOR COLLI -EPISTERNOCLEIDOMASTOIDEUS -CLAVODELTOIDEUS r ANCONAEUS HUMERALIS LATERALIS. IL ANCONAEUS SCAPULARIS lLANCONAEUS CORACOIDEUS L-CORACOBRACHIALIS LONGUS -TRAPEZIUS LATISSIMUS DORSI Fig. 10. Phrynosoma platyrhinos platyrhinos. Dorsal view of head and thorax musculature. Left Half: superficial layer. Right Half: first depth. BYU 14838, 22833, 22823, 22840, 22832, 22830, 22861. X face by a tendon which extends laterally be- tween the subscapularis II and the scapulohu- meralis anterior, continues deep to the distal fibers of the scapulodeltoideus and attaches to the anterior head of the humerus, deep to the anterior inserting fibers of the scapulodeltoideus. The tendon gives rise to muscle fibers in the area between the scapulodeltoideus and the latissi- mus dorsi. At the point where muscle fibers be- gin, there is a rather complete separation of the muscle into an anterior smaller bundle and a larger posterior bundle. These bundles unite approximately one-half the length of the brachi- um and continue as one mass to insert onto the olecranon process of the ulna and the above sesamoid. M. anconaeus coracoideus (Fig. 10) originates mainly bv a long, narrow tendon from the lateral apex of a broad triangular-shaped tendon locat- ed posterior and dorsal to the distal fibers of the subscapularis II and the subscapularis I respec- tively. The anterior apex of the triangular- shaped tendon unites with the inner surface of the scapula anterior to the mesial head of the subscapularis II, whereas the posterior apex at- taches to the inner surface of the coracoid near its posterior tip. The lateral apex forms a long, narrow tendon which gives rise to muscle fibers of the anconaeus coracoideus posterior to the dis- tal fibers of the anterior body of the latissimus dorsi. Some dorsal fibers of the anconaeus cora- coideus arise bv a short tendinous h
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