Bohls, Gött. Nachrichten, 1894, p. 84; Lankester, Trans. Zool. Soc. xiv. Pt. i. 1896, p. 11; Goeldi, xiv. Pt. vii. 1898, p. 413; Graham Kerr, Phil. Trans. (B), 192, 1900, p. 299.
Hunt, P.Z.S. 1898, p. 41.
Lankester, Nature, 49, 1894, p. 555; id. Trans. Zool. Soc. xiv. Pt. i. 1896; Graham Kerr, op. cit. p. 306.
For further information about the development of Lepidosiren, see Graham Kerr's valuable paper, op. cit.
Dollo, Sur la Phylogénie des Dipneustes, Bruxelles, 1895.