Cribellopsis moulladei Schlagintweit 2020, comb. nov.
Creators: name: Schlagintweit, Felix
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Chromista
Foraminifera
Globothalamea
Loftusiida
Orbitolinidae
Cribellopsis
Cribellopsis moulladei

description: Cribellopsis moulladei (Saint-Marc, 1974) comb. nov.
Fig. 1a–s
1974 Simplorbitolina moulladei n. sp. – Saint-Marc, p. 225, pl. 2, figs. 3-8.
1977 Coskinolina sunnilandensis Maync – Prestat, pl. 12, figs. 1–2.
1977 Coskinolina sp. – Prestat, pl. 12, figs. 3–7, 14–17.
1977 Iraqia sp. – Prestat, pl. 12, figs. 8–10 (B-forms).
1981 Paracoskinolina prestati n. sp. – Peybernès and Delmas, 81, figs. 1–7.
1982 Paracoskinolina prestati nom. nud. – Peybernès, pl. 2, figs. 9–12.
1989 Cribellopsis arnaudae n. sp. – Chiocchini. p. 42, pls. 1–2.
2012 Cribellopsis arnaudae Chiocchini – Chiocchini et al., pl. 69, fig. 1 pars, figs. 2–10.
2018 Cribellopsis aff. arnaudae Chiocchini – Cruz Abad, p. 111, figs. 92–93.
2019 in press Cribellopsis arnaudae Chiocchini – Schmitt et al., fig. 5D.
Descriptions: Test finely agglutinating, medium- to high conical. The cone base is almost flat in juvenile specimens, becoming convex in adult forms. Large sized, medium-conical specimens, which may show a slight depression in the central part of the base are interpreted as microspheric forms (Fig. 1j, r). The megalospheric embryo is situated at the rounded apex or positioned slightly eccentrically (Fig. 1a–f,?h). Sometimes a twochambered simple (= no partitions) embryo consisting of a subspherical protoconch and a smaller hemispherical deuteroconch is observable (Fig. 1b–c,?h). There are up to ~25 uniserial chambers in adult specimens. The welldeveloped marginal zone is subdivided by two orders of beams, primary beams and up to 3 short intercalary beams (Fig. 1 o-p, s). The primary beams are either straight or slightly undulating. Inwards they fuse laterally thereby forming a loose central network (Fig. 1n, p, s). In axial sections, they display an alternating position between subsequent chambers and a tendency to thicken in direction to the apex resulting in a triangular shape. In shallow tangential sections the beams exhibit an alternating rectangular pattern (Fig. 1c, h, l, q). The foramina distributed in the central zone are predominantly arranged oblique but may be also vertical.
Dimensions: see Table 1 for Cribellopsis moulladei (Saint-Marc) nov. comb., compared to proposed synonyms. Further comments are provided in the subchapter "Comparisons".
Comparisons: The following comparisons and remarks essentially refer to the proposed synonymy with the species Paracoskinolina prestati, Cribellopsis arnaudae, and a form recently described by Cruz-Abad (2018) as Cribellopsis aff. arnaudae. It is worth mentioning that all the mentioned taxa do not show any structural differences and cannot satisfactorily be separated biometrically (Table 1; and further comments in the text). For " Simplorbitolina " moulladei, no section displaying the embryo was provided. Saint-Marc (1974) just noted an initial spire of 3 to 4 chambers, but a simple (= non-septulate) bilocular embryo (protoconch + deuteroconch) is barely recognizable in the specimen illustrated in his plate 2, figure 6 (re-illustrated in Fig. 1h). A slightly eccentric biloculine embryo is reported from both " Paracoskinolina " prestati (see Fig. 1b), and Cribellopsis arnaudae (Fig. 1c). The differences of the mentioned taxa refer to the dimensional data as indicated in the original works.
description: Published as part of Schlagintweit, Felix, 2020, Cribellopsis Moulladei (Saint-Marc, 1974) Nov. Comb. (Foraminiferida, Orbitolinidae): An Albian Marker Taxon Of The Southern Neotethysian Margin, pp. 37-41 in Acta Palaeontologica Romaniae 16 (1) on pages 37-38, DOI: 10.35463/j.apr.2020.01.04, http://zenodo.org/record/10520716