ClipArt ETC
"Diagram of the heart and branchial arches in Protopterus (one of the Dipno). pre.c., precaval vein, made up of right and left jugulairs, subclavians, etc.; post.c., postcaval, made up the cardinals, right and left...a, aorta; au., auricle; c, carotid; c.v., cardinal veins (right and left); d.a., dorsal arteries; j, jugular veins; d.c., ductus Cuvieri; s.v., sinus venosus; v, ventricle." -Galloway, 1915

African Lungfish Heart

"Diagram of the heart and branchial arches in Protopterus (one of the Dipno). pre.c., precaval vein,…

"Diagram of heart and branchial arches in Ceratodus (one of the Dipnoi). a.b., air bladder (lung); p.a., pulmonary artery; p.c., post caval vein (right); p.v., pulmonary vein...a, aorta; au., auricle; c, carotid; c.v., cardinal veins (right and left); d.a., dorsal arteries; j, jugular veins; d.c., ductus Cuvieri; s.v., sinus venosus; v, ventricle." -Galloway, 1915

Queensland Lungfish Heart

"Diagram of heart and branchial arches in Ceratodus (one of the Dipnoi). a.b., air bladder (lung); p.a.,…

"Diagram of the heart, the branchial arches, and the principal veins in the Teleosts. Ventral view. The heart is represented without the sigmoid flexure; that is, with the auricle posterior. a, aorta; au., auricle; br.a., branchial arches of the aorta (1-4, numbering from the front); c, carotid; c.v., cardinal veins (right and left); d.a., dorsal arteries; j, jugular veins; d.c., ductus Cuvieri; s.v., sinus venosus; v, ventricle. Only four arterial arches are shown." -Galloway, 1915

Teleost Heart

"Diagram of the heart, the branchial arches, and the principal veins in the Teleosts. Ventral view.…

"Diagrams of the structure of the heart in the lower Vertebrates. A, primitive condition; B, the position of the parts in the fishes. a, artery; au., auricle; c, conus arteriosus with valves; s.v., sinus venosus; v, valves; ve., vein; vent., ventricle. The dorsal portion of the heart is toward the bottom of the figure." -Galloway, 1915

Vertebrate Heart

"Diagrams of the structure of the heart in the lower Vertebrates. A, primitive condition; B, the position…