Napora pacifica Kiessling, 1999

Dumitrica, Paulian & Zügel, Peter, 2003, Lower Tithonian mono- and dicyrtid Nassellaria (Radiolaria) from the Solnhofen area (southern Germany), Geodiversitas 25 (1), pp. 5-72 : 62

Napora pacifica Kiessling, 1999 ( Fig. 29H, I )

Napora sp. E – Pessagno et al. 1986: 46, pl. 10, fig. 18.

Napora sp. F – Pessagno et al. 1986: 46, pl. 10, fig. 9.

“ Napora pacifica ” – Kiessling 1995: pl. 61, figs 2, 5 (nomen nudum).

Napora pacifica Kiessling, 1999: 70 , pl. 14, figs 1, 6.

Napora pacifica – Hull 1997: 120, pl. 46, figs 5, 6, 17.

MATERIAL EXAMINED. — More than 100 specimens from sample Mue 22, and from other samples.

OCCURRENCE. — Lower to upper Tithonian of Antarctica, California, east-central Mexico, Solnhofen area ( Germany).

REMARKS

This species is the most frequent ultranaporid in the sample Mue 22. It was also found in sample Mue 6, but represents a rare faunal element in several other samples from different sections of the Mühlheim Member. Our well preserved material shows a well developed velum, which is the only difference from the type material. Remnants of such a velum were also illustrated by Hull (1997). Some specimens bear also two subsidiary spines on each blade of the apical horn.

Figures

FIG. 29. — A, B, Napora lomoalta Hull, 1997; A, right lateral view; B, view from Ll; C, D, Napora matsuokai n. sp.; C, holotype, left lateral view; D, paratype, left lateral view; E-G, Napora modesta n. sp.; E, holotype, dorsal view; F, G, paratypes; F, dorsal view; G, view from Lr; H, I, Napora pacifica Kiessling, 1999; H, view from Ll; I, view from Lr; J, K, Napora pyramis n. sp.; J, holotype; K, paratype; L-N, Napora schaudibergensis n. sp.; L, M, paratypes; L, dorsal view; M, view from Ll; N, holotype, view from Lr; O, Napora sp., left lateral view. Abbreviations: Ll, left primary lateral spine; Lr, right primary lateral spine. Scale bars: A, H, I, M, N, 100 µm; B-G, J-L, O, 30 µm.