Napora burckhardti Pessagno, Whalen & Yeh, 1986

Dumitrica, Paulian & Zügel, Peter, 2003, Lower Tithonian mono- and dicyrtid Nassellaria (Radiolaria) from the Solnhofen area (southern Germany), Geodiversitas 25 (1), pp. 5-72 : 60

Napora burckhardti Pessagno, Whalen & Yeh, 1986 ( Fig. 28H )

Napora burckhardti Pessagno, Whalen & Yeh, 1986: 37 , pl. 10, figs 2-5, 15, 16, 21-23.

Napora sp. 1 – Matsuoka 1998: 171, pl. 10, fig. 159.

MATERIAL EXAMINED. — Five specimens from sample Mue 22, two specimens from sample Mue 6.

OCCURRENCE. — Early Tithonian, Hybonotum Zone , Solnhofen area, Germany; early Tithonian of east-central Mexico and lower Berriasian from Mariana Trench ( SW Pacific).

REMARKS

The specimens from the Mühlheim Member have the same type of cephalis, thorax, and feet as those of N. burckhardti , but the apical horn is always three-bladed distally and its middle part is swollen, with subsidiary spines. In N. burckhardti the distal part of the apical horn is circular in cross section and the middle part has no subsidiary spines.

Figures

FIG. 28. — A, B, Napora aranea n. sp.; A, holotype, view from Ll; B, paratype, dorsal view; C-E, Napora avirostrum n. sp.; C, holotype, view from Lr; D, E, paratypes; D, dorsal view; E, view from Lr; F, G, Napora bondoca n. sp.; F, holotype, view from Ll; G, paratype, view from Ll; H, Napora burckhardti Pessagno, Whalen & Yeh, 1986, dorsal view; I-K, Napora cristata n. sp.; I, holotype, right lateral view; J, K, paratypes; J, right lateral view; K, view from Ll; L, M, Napora divaricata n. sp., holotype, ventral and basal views. Abbreviations: Ll, left primary lateral spine; Lr, right primary lateral spine. Scale bars: A-E, H, K, 100 µm; F, G, I, J, L, M, 30 µm.