Part 4

1937. The development of the vertebrate skull. Pp. xxiii + 552. Oxford, Clarendon Press.

de Villiers, C. G. S.

1934. Studies of the cranial anatomy of Ascaphus truei Stejneger, the American "Liopelmid." Bull. Mus. Comp. Zool., 77:1-38.

Emelianov, S. W.

1936. Die Morphologie der Tetrapodenrippen. Zool. Jahrb. (Anat.), 62:173-274.

Francis, E. T. B.

1934. The anatomy of the salamander. Pp. xxxi + 381. Oxford, Clarendon Press.

Gamble, D. L.

1922. The morphology of the ribs and the transverse processes of Necturus maculatus. Jour. Morph., 36:537-566.

Gray, P.

1930. On the attachments of the Urodele rib to the vertebra and their homologies with the capitulum and tuberculum of the Amniote rib. Proc. Zool. Soc. London, 1930(1931):907-911.

Gregory, J. T.

1950. Tetrapods from the Pennsylvanian nodules from Mazon Creek, Illinois. Am. Jour. Sci., 248:833-873.

Hecht, M. E.

1957. A case of parallel evolution in salamanders. Proc. Zool. Soc. Calcutta, Mookerjee Mem.:283-292.

Holmgren, N.

1933. On the origin of the tetrapod limb. Acta Zool., 14:185-295.

1939. Contributions to the question of the origin of the tetrapod limb. Acta Zool., 20:89-124.

1949a. Contributions to the question of the origin of tetrapods. Acta Zool., 30:459-484.

1949b. On the tetrapod limb problem again. Acta Zool., 30:485-508.

Herre, W.

1935. Die Schwanzlurche der mitteleocaenen (oberlutetischen) Braunkohle des Geiseltales und die Phylogenie der Urodelen unter Einschluss der fossilen Formen. Zoologica, 33:87, 1-5.

Jarvik, E.

1942. On the structure of the snout of Crossopterygians and lower gnathostomes in general. Zool. Bidrag fran Upsala, 21:235-675. 1952. On the fish-like tail in the Ichthyostegid Stegocephalians. Meddelelser on Gronland, 114(12):1-90.

Mookerjee, H.K.

1930a. On the development of the vertebral column of the Urodela. Phil. Trans. Roy. Soc. London, B 218:415-446.

1930b. On the development of the vertebral column of the Anura. Philos. Trans. Royal Soc. London, B 219:165-196.

MacBride, E.W.