Cuneolina cf. parva Henson, 1947, 1948

Sun, Qi & Schlagintweit, Felix, 2024, First Record Of Upper Cretaceous (Campanian?) Larger Benthic Foraminifera From The Yigeziya Formation Of The Southwestern Tarim Basin, China, Acta Palaeontologica Romaniae 20 (2), pp. 131-144 : 137

Cuneolina cf. parva Henson, 1947

Fig. 7l, r

1947 Cuneolina pavonia var. parva var. nov. – Henson, p. 624, pl. 14, figs. 1-6, pl. 17, figs. 7-12, pl. 18, figs. 12- 14.

Remarks: The specimens from the Yigeziya Formation are herein assigned with some reservation to Cuneolina parva described by Henson (1947: Cuneolina pavonia parva ) from the Santonian of Egypt. The greatest observed test width is ~ 2.20 mm with a height (incomplete) of ~ 1.85 mm ( Fig. 7r ); the thickness is ~ 0.50 mm. The genus Cuneolina d’Orbigny, 1839 and its representatives need taxonomic revision.

Figures

Fig. 7. Orbitolinidae indet. (a?, b-g), Nezzazatinella cf. picardi (Henson) (h-k), Cuneolina cf. parva Henson (l, r), Tetrataxiella? floriforma Schlagintweit & Sanders (m-n), rotaliids (Suturina? sp.) (o-p), cyclamminid gen. et sp. indet. (q) from the Campanian? Yigeziya Formation of the SW Tarim Basin, China. a. Slightly oblique axial section. b, c. Oblique sections. d. Tangential section showing the presence of a single rafter in the marginal zone. e-g. Tangential sections passing through the megalospheric biloculine embryo (detail in e) within the early trochospire. h, j-k. Oblique sections. i. Tranverse section through the last whorl of a juvenile specimen. l. Slightly oblique transverse section of the juvenile part. r. Slightly oblique longitudinal section perpendicular to the plane of biseriality. m Longitudinal section, slightly oblique. n. Oblique transverse section. o-q. Oblique sections. Abbreviations: deu = deuteroconch, pr = protoconch, r = rafter. Dotted line in e: Assumed boundary between protoconch and deuteroconch.