Calocyclas sp.

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 : 25

Calocyclas sp. aff. barbadensis Ehrenberg, 1875 ( Fig. 16J )

Calocyclas barbadensis Ehrenberg, 1875 : pl. XVIII, fig. 8.

GEOGRAPHIC DISTRIBUTION. — Voronesh Anticline.

STRATIGRAPHIC RANGE. — (?)Late Paleocene-early Eocene (this study).

Figures

FIG. 16. — Early and middle-late Eocene Radiolarians from different localities; A, F, Amphisphaera gonioxyphos (Clark & Campbell, 1942), o/p 294/11, interval 12.8 m; B, C, Periphaena quadrata (Clark & Campbell, 1942), well 510C, interval 36.0 m; D, Amphisphaera megaxyphos tetraxyphos (Clark & Campbell, 1942), o/p 294/4, interval 6.3 m; E, Carposphaera globosa Clark & Campbell, 1945, well 510C, interval 36.0 m; G, Dorylonchidium fructiforme Clark & Campbell, 1942, o/p 294/10, interval 12.2 m; H, I, Conoactinomma sp. aff. Conosphaera stilloformis Lipman, 1960, well 510C, interval 36.0 m; J, Calocyclas sp. aff. barbadensis Ehrenberg, 1875, well 730C, interval 43.7 m; K, L, Anthocyrtium sp., well 730C, interval 38.8 m; M, Theocotyle venezuelensis Riedel & Sanfilippo, 1970, o/p 294/11, interval 12.8 m; N-P, Tripodiscinus kaptarenkoae (Gorbunov, 1979), o/p 294/10, interval 12.2 m; Q, Calocyclas undella (Clark & Campbell, 1942), o/p 294/2, interval 4.3 m; R, Callimitra sp. aff. Tripilidium clavipes Clark & Campbell, 1945, o/p 294/6, interval 8.3 m; S, Tripodiscinus sp., well 730C, interval 38,8 m; T, Ceratocyrtis rhabdophora rhabdophora (Clark & Campbell, 1945), o/p 294/5, interval 7.3 m; U, Botryostrobus sp., well 730C, interval 38.8 m; V, Callimitra cf. atavia Goll, 1979, o/p 294/6, interval 8.3 m. Scale bars: 100 µm.