[162] Barber (89) Pls. V. VI.
[163] Fitting (07).
[164] Potonié (04) Lief ii.
[165] Weiss, C. E. (86).
[166] Fliche (03).
[167] Vol. I, p. 300.
[168] Halle (07) p. 1.
[169] Feistmantel (75) A. p. 183, Pl. XXX. pp. 1 and 2.
[170] Germar (49) Pl. XXVI; Geinitz (55) A. Pl. I. pp. 5, 6.
[171] Bommer (03) p. 29, Pl. IX, figs. 138–141.