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Volume 38, 1905
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Nodosaria (D.) obliqua, L. sp., var. vertebralis, Batsch var.
Plate III, fig. 5.

Nautilus (Orthoceras) vertebralis, Batsch, 1791, Conchyl. des Seesandes, p. 3, No. 6, pl. ii, figs. 6 a, b.

Nodosaria vertebralis, Batsch sp., Bradv, 1884, Rep. Chall., vol. ix, p. 514, pl. lxiii, fig. 35; pl. lxiv, figs. 11–14.

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N. obliqua, L sp., var. vertabrahs, Batsch, Goës, 1894, K. Svenska Vetenskaps-Akad. Handl., vol. xxv, No. 9, p. 70, pl. xiii, figs. 698, 699.

That this form is only a variety of N. obliqua is clearly demonstrated by the present series of specimens. Indeed, it is somewhat difficult to satisfactorily separate the variety from the species in some cases.