Globotruncanella saratogensis (Applin 1920)

Neagu, Theodor, 2016, Micropaleontological Study Of The Gura Beliei Red Marls Formation From The Pietroșița Area (Turonian - Maastrichtian). Part Iii Campanian-Maastrichtian Planktonic Foraminifera, Acta Palaeontologica Romaniae 12 (2), pp. 67-91 : 74

Globotruncanella saratogensis (Applin 1920)

Figs 3 : 25-27; Figs. 7 : 16-18

1920 Globigerina cretacea d'Orbigny var. saratogensis Applin , p. 98, pl.3, fig.8.

Dimensions: D = 0,43-0,46 mm; d = 0,36- 0,36 mm; g = 0,19 mm

Remarks: In the paper of Applin et al. (1925) in the last part of this article were described few species of foraminifera. Some of these species belong to the Paleogen, but there are also two species from the Upper Cretaceous: Globigerina marginata d'Orbigny and a new taxon Globigerina cretacea var. saratogensis ( Fig. 17 : 1-6 in the present paper). In the description of this new subspecies, Applin et al. (1925, p. 98) pointed out the following features: " chambers increasing gradually in size, sometime slightly carinated at the periphery (which is frail represented on the figure) wall smoothing. The regularity of coiling and the tendency for the form to develop a carinared rim.".......Taking in consideration all the presented features, our specimens ( Fig. 3 : 25-27) corresponds with the Applin taxon.

By the inflated character of the chambers, spiral and umbilical, this species differs from Bolli's Praeglobotruncana coarctata 1957.

Occurrences: Țâța Valley, Pietrosița- Fieni area Stratigraphic distribution: Upper Maastrichtian.

Specimens: LPB.IV. 12441

Figures

Fig. 3: 1-9 Globotruncanella coarctata (Bolli 1957), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV. 12427; 10-17 Globotruncanella pshadae (Keller 1946), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV.12427; 18-20 Globotruncanella petaloidea (Gandolfi 1955), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV.12428; 21-24 Globotruncanella havanensis (Voorwjik 1937), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV.12329; 25-27 Globotruncanella saratogensis (Applin 1920), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV. 12441; 28-30 Rugotruncana subrugosa (Gandolfi 1955), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV.12420; 31 Schsckoina multispinata (Cush.Wick 1940), Maastrichtian, Țâța Valley, PietroȘița-Fieni (All specimens x 90).

Fig. 7: 1-6, 10-15, 22-27 Rugotruncana subpennyi (Gandolfi 1955), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV.12446; 7-9 Rugoglobigerina rugosa (Plummer1926), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV.12411; 16-18 Globotruncanella saratogensis (Applin, 1920), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV.12441; 19-21, 24-29 Rugotruncana subglaessneri (Gandolfi 1955), Maastrichtian, Țâța Valley, PietroȘița, LPB.IV. 12421 (All specimens x 90).

Fig. 17: Reproductions of different Globotruncanella taxa from the original papers. 1-6 Globigerina cretacea var. saratogensis Applin 1920 (modified from Applin, 1920); 7-9 Globotruncana havanensis Voorwjik 1937 (modified from Voorwjik, 1937); 10-15 Rugotruncana havanensis (Voorwjik 1937) emend. Brönnimann & Brown 1955, LPB.IV. 12429 (specimens x 90, Neagu Collection); 16-33 Globorotalia pshadae Keller 1946 (modified from Subbotina, 1953).