Rectogordiopsis ovaliformis Okuyucu & Akbaş, 2026, gen. et sp. nov.

Rectogordiopsis ovaliformis gen. et sp. nov. urn:lsid:zoobank.org:act: F4124BCF-5B42-495B-B5C8-FE3DB60FAEDF Fig. 7 Indeterminate Miliolina – Kobayashi & Altiner 2011: pl. 1 fig 30. Diagnosis Very large oval Rectogordiopsis gen. nov. with flattened to slightly rounded periphery. Etymology From the overall oval shape of the test. Material examined Twelve specimens were observed. 1 holotype and 7 paratypes are illustrated. Holotype (Fig. 7A) TÜRKİYE – Ankara • SE of Kutludüğün village, Kutludüğün Yayla, sample KDY–2; 39°52′07.4″ N, 33°06′23.4″ E; 20 Jun. 2023; Okuyucu and Akbaş leg.; KTÜN.CO–KDY2, KDY2.1–6. Paratypes (Fig. 7B–I) TÜRKİYE – Ankara • 2 specs; same data as for holotype; KTÜN.CO–KDY2, KDY2.1–52, KDY2.2–1 • 5 specs; same data as for holotype, sample KDY–1; 39°52′11.0″ N, 33°05′51.4″ E; KTÜN.CO–KDY1, KDY1.1–1, KDY1.2–19, KDY1.3–19, KDY1.5–24, KDY1.6–28. Description Test large, involute, oval with slightly flattened to broadly rounded periphery. Coiling at the beginning tightly glomospiral and finally planispiral. Spherical proloculus, 0.06–0.08 mm in diameter, followed by second chamber slowly enlarging in height through successive whorls. The initial part consists of at least 25–30 whorls with thin-walled. In the terminal part (4–6 whorls) the height of the chamber increases gradually. Adult specimens measure: D = 1.95–3.43 mm, w = 1.70–2.68 mm, the ratio w/D = 0.73–0.96, n.w. = 29–36. Wall thick, calcareous porcelaneous with perforations (comb teeth-shaped). The lumen of the tube is relatively narrow with some flosculinisation in adult stage. Aperture simple, terminal. Comparison This new species differs from the Rectogordiopsis kamuranaeformis gen. et sp. nov. mainly by narrower chamber height, flattened periphery and more tightly coiled inner glomospiroid whorls. Microfossil association The associated foraminiferal fauna is listed in Table 1 and illustrated in Figs 4–6. Range and distribution Middle Permian (late Capitanian) of the Elmadağ Olistostrome, Ankara City, Central Türkiye.