Pseudonummoloculina Calvez, 1988

Schlagintweit, Felix & Rashidi, Koorosh, 2016, Some New And Poorly Known Benthic Foraminifera From Late Maatrichtian Shallow-Water Carbonates Of The Zagros Zone, Sw Iran, Acta Palaeontologica Romaniae 12 (1), pp. 53-70 : 61

Genus Pseudonummoloculina Calvez, 1988

Remarks: Calvez (1988) established the genus Pseudonummoloculina (type-species Pseudonummoloculina aurigerica, Albian of the Pyrenees) for “nummoloculinas” with a notched aperture (= an aperture bordered by a series of notches protruding from the floor and roof of the chambers). The widespread Cenomanian “nummoloculinas” were thereafter regarded as Pseudonummoloculina sp. by De Castro (1987) since they show a “wavy margin” simulating a cribrate aperture. Likewise, the restudy of the Mexican material of Nummoloculina heimi Bonet by Hottinger et al. (1989) did not substantiate the existence of an aperture with a tooth, in contrast to the emendation provided by Conkin & Conkin (1958), but according to the former, the aperture “ clearly show rows of notches in the distal margin ”. Owing to these structural differences, Hottinger et al. (1989: p. 104) introduced the new combination Pseudonummoloculina heimi (Bonet) concluding that “ pseudonummoloculinid species exist from Albian to Senonian in at least three neighboring bioprovinces (Caribbean, Pyrenean and western Tethys) ”. In a contribution on Lower- Middle Cretaceous foraminifers from deep-sea drilling legs, Arnaud-Vanneau & Sliter (1995) state, “the genus Pseudonummoloculina is represented by three species: the type-species P. aurigerica Calvez (Albian of Spain), P. heimi (Bonet) (Cenomanian of Mexico) and P. robusta (Torre) (Coniacian or Santonian of Italy)”. Excluded are Nummoloculina regularis Philippson (late Cretaceous of Austria, see discussion in Schlagintweit, 2008, for details) and Nummoloculina irregularis Decrouez & Radoičić, 1977 . The latter possessing an ophthalmidid type of coiling different from Pseudonummoloculina .