Lophocyrtis norvegiensis ( BjØrklund & Kellogg, 1972 )

Popova, Irina M., Baumgartner, Peter O., Guex, Jean, Tochilina, Svetlana V. & Glezer, Zoya I., 2002, Radiolarian biostratigraphy of Paleogene deposits of the Russian Platform (Voronesh Anticline), Geodiversitas 24 (1), pp. 7-59 : 39

Lophocyrtis norvegiensis ( BjØrklund & Kellogg, 1972) ( Figs 11M ; 13G, H )

Lophocorys norvegiensis BjØrklund & Kellogg, 1972: 388 , pl. 1, figs 2, 6, 7. — Dzionoridze et al. 1978: pl. 28, figs 17, 18; pl. 34, figs 2, 3. — Hull 1996: 139, pl. 6, figs 11, 12.

Artobotrys norvegiensis Petrushevskaya, 1979 : figs 394, 395.

Lophocyrtis norvegiensis – Westberg-Smith & Riedel 1984: 493, pl. 6, fig. 7.

Lophocyrtis auriculaleporis – Kozlova 1999: pl. 31, fig. 3; pl. 35, fig. 15.

GEOGRAPHIC DISTRIBUTION. — Norwegian- Greenland Sea, North Caspian Sea lowland, Voronesh Anticline.

STRATIGRAPHIC RANGE. — Middle Eocene ( BjØrklund 1976; Hull 1996); late middle Eocene ( Khokhlova 1996); middle-early late Eocene (this study).

Figures

FIG. 11. — Middle-early late Eocene Radiolarian association, Pirogovo Village, Well 510C, 44.0 m; A, B, Anthocyrtidium pupa Clark & Campbell, 1942; C, Lophocyrtis aspera (Ehrenberg, 1873); D, Clathrospyris sandellae Goll, 1980; E, Callimitra clavipes (Clark & Campbell, 1945); F, Heterosestrum formosum bispinum (Tochilina, 1972) emend.; G, Theocorys anaclasta Riedel & Sanfilippo, 1970; H, Axoprunum visendum (Kozlova, 1966); I, Lophocyrtis ex. gr. Calocyclas semipolita Clark & Campbell, 1942; J, K, Hexacontium sp.; L, Lychnocanium sp. B; M Lophocyrtis norvegiensis (Bjørklund & Kellogg, 1972); N, Lophocyrtis auriculaleporis (Clark & Campbell, 1942); O, Lychnocanium sp. A; P, Desmospyris ex. gr. anthocyrtoides Bütschli, 1882. Scale bar: 100 µm.

FIG. 13. — Middle Eocene Radiolarian association, Pirogovo Village, Well 510C, interval 44.0 m; A, F, Lophocyrtis aspera (Ehrenberg, 1873); B, O, Calocyclas talwanii Bjørklund & Kellogg, 1972; C, D, Anthocyrtidium pupa Clark & Campbell, 1942; E, I, L, Calocycletta sp. aff. virginis Haeckel, 1887; G, H, Lophocyrtis norvegiensis (Bjørklund & Kellogg, 1972); J, K, Lophocyrtis auriculaleporis (Clark & Campbell, 1942); M, Lophocyrtis sinitzini (Lipman, 1949) sensu Kozlova 1999; N, Phormocyrtis sp. aff. proxima Clark & Campbell, 1942. Scale bars: A-H, J-N, 100 mm; I, O, 50 µm.