Astrononion stellatum Cushman and Edwards, 1937

Setoyama, Eiichi & Kaminski, Michael A., 2015, Neogene benthic foraminifera from the southern Bering Sea (IODP Expedition 323), Palaeontologia Electronica (International ed. in English) 76 (4), pp. 1-30 : 15

Astrononion stellatum Cushman and Edwards, 1937

Figure 6.3a–c

1937 Astrononion stellatum Cushman and Edwards : p. 32, pl. 3, figs. 9–11.

Description. Test small, planispiral, involute, with seven chambers in the final whorl, lobulate in outline. Periphery rounded. Chambers inflated, increasing in size gradually, with a plate extending into the umbilicus. Sutures depressed. Wall smooth, finely perforate. Aperture an interiomarginal slit.

Remarks. It differs from Astrononion stelligerum ( d’Orbigny, 1839a) by possessing fewer chambers in the final whorl.

Figures

FIGURE 6. All scale bars are 100 µm. 1. Nonionellina labradorica, 3H-CC; a. lateral left view; b. edge view. 2. Nonionellina cf. Nonionellina labradorica, 15H-5, 146–148 cm; a. lateral left view; b. edge view. 3. Astrononion stellatum, 10H-CC; a. lateral fight view; b. lateral left view; c. edge view. 4. Melonis affinis, 1H-CC; a. lateral left view; b. edge view. 5. Melonis affinis, 9H-5, 146–148 cm. 6. Melonis pompilioides, 1H-CC; a. lateral left view; b. edge view. 7. Pullenia bulloides, 11H-3, 146–148 cm; a. lateral left view; b. apertural view. 8. Pullenia bulloides, 12H-3, 146–148 cm; a. lateral left view; b. apertural view. 9. Pullenia cf. Pullenia catalinaensis, 36H-CC; a. lateral left view; b. edge view. 10. Pullenia cf. Pullenia catalinaensis, 9H-5, 146–148 cm; a. lateral left view; b. edge view. 11. Pullenia elegans, 13H-3, 146–148 cm; a. lateral right view; b. edge view. 12. Pullenia elegans, 13H-3, 146–148 cm; a. lateral left view; b. edge view. 13. Pullenia salisburyi, 26H-5, 147–149 cm; a. lateral left view; b. edge view. 14. Chilostomella ovoidea, 2H-CC, a. ventral view; b. dorsal view. 15. Chilostomella cf. Chilostomella fimbriata, 10H-3, 146–148 cm; a. lateral right view; b. edge view.