Simplorabanitina simplex Consorti et al., 2022

Simplorabanitina simplex Consorti et al., 2022 View in CoL

Fig. 15

2022a Rabanitina ? sp., Schlagintweit & Yazdi-Moghadam, figs. 3C, 3F; Cenomanian, Iranian Zagros.

T 2022 Simplorabanitina simplex n. gen., n. sp. Consorti et al., p. 4; fig. 3(A-Q); middle Cenomanian, Iranian Zagros

Taxonomy/Identity: The wall is pseudokeriothecal and the test is characteristically planoconvex (typically in the juvenile stage) to subglobular (adult), trochoid throughout with a well-rounded periphery and multiple apertures in a single (or multiple in the final chamber), interiomarginal row. Coxites is similar but has a more flattened profile and a more acute periphery. It is a close homeomorph of Rabanitina but lacks the “marked skeletal element (i.e., the ‘median plate’)” of that genus (Consorti et al., 2022).

The possession of a pseudokeriothecal wall structure in an otherwise “nezzazatoid” taxon (Consorti et al., 2022) suggests higher-level taxonomic classification requires further study (see Table 1).

Fig. 15. Representative illustrations of Simplorabinatina simplex : a Subaxial section, Consorti et al. (2022, fig. 3A, Iran); b Subequatorial section, Consorti et al. (2022, fig. 3J, Iran); c Subequatorial section, Consorti et al. (2022, fig. 3M, Iran).

Reference Images: Consorti et al. (2022), Fig. 3 View Fig , p. 4 View Fig .

Confident Stratigraphic Range: lower middle Cenomanian of the Zagros, Iran (based on a single record).

Uncertain Stratigraphic Range: not applicable.

A recently introduced species from the middle Cenomanian part of the Sarvak Formation, Iranian Zagros (Consorti et al., 2022). Consorti et al. (2022) suggest that the species has a restricted distribution “ expected to be limited to the Arabian Plate, and perhaps including northern Somalia ” (p. 6).

Geographic Range: Currently only known from the Arabian Plate.