Petalospyris argiscus Ehrenberg, 1875

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 : 45

Petalospyris argiscus Ehrenberg, 1875 ( Fig. 7Q )

Petalospyris argiscus Ehrenberg, 1875 : pl. XXII, figs 1, 2. — Bütschli 1882: taf. XXIX, fig. 6a, b.

Gorgospyris hemisphaerica sibirica – Kozlova & Gorbovets 1966: 97, pl. XV, fig. 8.

Dorcadospyris argisca – Chen 1975: 456, pl. 3, fig. 9.

GEOGRAPHIC DISTRIBUTION. — Barbados, Western Siberia, eastern slope of the Ural Mountains, Voronesh Anticline.

STRATIGRAPHIC RANGE. — Eocene (Kozlova & Gorbovets 1966); Antarctic, Upper (?)Eocene ( Chen 1975); (?)late Paleocene-early Eocene (this study).

REMARKS

All specimens observed contain a short “apical” horn located on saggittal ring.

Figures

FIG. 7. — Early Eocene Radiolarian association, Petropavlovka Village, well 730, interval 44,3 m; A, B, Petalospyris sp. aff. argiscus Ehrenberg,1875; C, D, Petalospyris (?) sp.;E, F, Pterocodon ampla (Brandt,1936); G, Lychnocanoma bellum longipes (Kozlova,1966); H, Podocyrtis cf. papalis Ehrenberg, 1875; I, Lychnocanoma sp. aff. bandyca Mato & Theyer, 1980; J, Cycladophora cf. Pterocorys bicornis Popofsky, 1908; K, Lithostrobus picus (Ehrenberg,1875); L, Amphisphaera megaxyphos trixyphos (Clark & Campbell, 1942); M, Amphymenium splendiarmatum Clark & Campbell, 1942; N, Clathrocyclas ex. gr. universa Clark & Campbell, 1942; O, Prunopyle sp. aff. ovata Kozlova, 1966; P, Plectodiscus circularis (Clark & Campbell, 1942); Q, Petalospyris argiscus Ehrenberg, 1875; R, Anthocyrtidium sp. aff.pupa Clark & Campbell, 1942;S, Ommatogramma biconstrictus (Lipman,1953).Scale bars:100 µm.