Pseudochoffatella cuvillieri

SCHLAGINTWEIT, FELIX, 2021, Orbitolinids And Other Larger Benthic Foraminifera From The Aptian-Albian Of Tibet: Critical Discussion Of Some Recently Published Data, Acta Palaeontologica Romaniae 18 (1), pp. 17-23 : 19

Extension of Pseudochoffatella cuvillieri to the top of the Albian

Fig. 2H

Referred illustrations: Pseudochoffatella cuvillieri , figures 12.7 and 12.8, figure 9.9 (cf.) in BouDagher-Fadel et al. (2017).

P. cuvillieri Deloffreis typically recorded from the upper Aptian ( Busnardo et al., 1968: “biozone à Pseudochoffatella cuvillieri ; Fourcade, 1970; Moullade and Peybernès, 1975; Peybernès, 1976; Schlagintweit et al., 2016). In other areas, however, P. cuvillieri is recorded also throughout the lower Albian ( Granier, 1987; Betic Cordillera, Spain).

With the exception of one record in Switzerland ( Schroeder et al., 2007), Pseudochoffatella cuvillieri has only been recorded from Iberia. The three specimens of P. cuvillieri illustrated by BouDagher-Fadel (2017) are here considered as belonging to three discrete taxa. The specimen shown in fig. 12.7 therein (here re-illustrated exemplarily in Fig. 2H ) represents an uncoiling lituolid with alveolar wall structure, and a single central foramen. Note that Pseudochoffatella possesses reniform to annular chambers, a shallow subepidermal network of beams and rafters and cribrate foramina ( Deloffre, 1961, 1976; Cherchi & Schroeder, 1982; Loeblich & Tappan, 1987). Comparable specimens have been observed in the early Aptian Taft Formation of Iran ( Fig. 2 I-K). The specimen illustrated in Fig. 12.8 by BouDagher-Fadel et al. (2017) corresponds to an oblique section of an unknown coarsely agglutinated foraminifera with short coiled portion, then uncoiling, and chambers with coarse subepidermal network (ultimate chamber above). The specimen illustrated in fig. 9.9 by BouDagher-Fadel et al. (2017) corresponds to an oblique equatorial section of a planispirally coiled agglutinated taxon with coarse-alveolar wall. It might belong to Pseudocyclammina (e.g., compare with BouDagher-Fadel et al., 2017, fig. 9.8) but the illustration quality and the uncertainty about the foramina features do not allow a precise identification.

Figures

Fig. 2. A-B, Praeorbitolina cormyi Schroeder fide BouDagher-Fadel et al. (2017, fig. 9.6 and 9.5), Lower Cretaceous of Tibet. C-D, Paleodictoyconus actinostoma Arnaud-Vanneau & Schroeder, early Aptian of Central Iran. E, Praeorbitolina cf. wienandsi Schroeder fide BouDagher-Fadel et al. (2107, fig. 12.1). F-G, juvenile specimens of Paleodictyoconus sp., (?P. actinostoma Arnaud-Vanneau & Schroeder), early Aptian of Central Iran. H, Pseudochoffatella cuvillieri Deloffre fide Bou- Dagher-Fadel et al. (2017, fig. 12.7). I-K, unknown lituolid, early Aptian Taft Formation of Central Iran. Figures without scale.