[597]

Kner, SB. k. Akad. Wiss. Math.-Naturw. Cl. lvii. Pt. ii. 1868, p. 279.

[598]

See Chaps. XI. XII. and XIV.

[599]

Miall, Palaeont. Soc. 1878; Teller, "Ueber Ceratodus sturi," Abh. k. k. Geol. Reichsanst. Wien. xv. 1891.

[600]

Günther, Phil. Trans. 161, 1871, p. 511.

[601]

Semon, Zool. Forsch. im Australien, i. Jena, 1893, p. 13 et seq.