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Plate 7 | Swiss Journal of Palaeontology

Plate 7

From: The planktonic foraminifera of the Jurassic. Part I: material and taxonomy

Plate 7

(=selected plate figures from Stam 1986 and Simmons et al. 1997) Nos. 1, 2, 5–7, Globuligerina bathoniana (Pazdrowa) from sample 31 of Stam (1986), Coronatum Zone, Middle Callovian, Mareta Beach, Portugal; nos. 1, 2, two views of same specimen, ×200; nos. 5–7, three views of same specimen, ×240; specimens are decalcified (see text). Note that the two tests each contain 3 whorls and loop-shaped aperture with lip in no. 5. Nos. 3, 4 . Globuligerina oxfordiana (Grigelis) from sample 6.16 of Stam (1986), Platynota Zone, Early Kimmeridgian, Tojeira Formation, Montejunto, Portugal; two views of same specimen, ×175. Nos. 8–16. Globuligerina bathoniana (Pazdrowa) 1969, Middle Bathonian, Ogrodzieniec, Poland; two metatypes deposited in the Geological Faculty, Moscow State University, Russia (specimens diameter ~160 µm). Nos. 8–10, spiral, side and umbilical views, ×250; nos. 14–15, same specimen, two views of surface detail showing pseudomuricae usually separated but some adjacent pairs fusing into very short and discontinuous ridges (×1250 and ×l100, respectively). Nos. 11–13, spiral, side and umbilical views, metatype donated by B. Masters to The Natural History Museum, London (specimen diameter 170 µm), spiral, side and oblique umbilical views (×235). No. 16, topotype showing enlargement of the apertural face with a low loop-shaped aperture (×750). Traces of a bulla can be seen on nos. 10 and 11

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