Hemicyclammina whitei ( Henson, 1948c )

Hemicyclammina whitei ( Henson, 1948c) View in CoL

Figure 2 View Fig

T 1948c Cyclammina whitei n. sp. – Henson, p. 13-14, pl. 13, figs. 3, 12-14; latest Albian, Qatar (also reported from the Albian of Iraq).

1953b Hemicyclammina sigali n. sp. – Maync, p. 148- 149, figs 1-5; middle Cenomanian, Algeria.

1965 Hemicyclammina sigali – Hamaoui, pl.1, fig. 7; pl. 6, fig. 10; pl. 15, fig. 9; Cenomanian, Israel.

1965 Hemicyclammina nov. sp.? – Hamaoui, pl. 5, figs. 1-3; Cenomanian, Israel.

? 1965 Haplophragmoides difformis n. sp. – Hamaoui, p. 17, pl. 6, fig. 9, non pl. 3, figs. 5-8; Cenomanian, Israel.

1966 Hemicyclammina whitei – Banner, pl. 2, figs. 4a, b, 5; latest Albian, Qatar.

1966 Hemicyclammina sigali – Banner, pl. 12, figs. 3a; pl. 13, figs. 1-6; early – middle Cenomanian, offshore Abu Dhabi (non pl. 12, fig, 3b from the Aptian of offshore Abu Dhabi – possibly an ancestral non-alveolar form).

1967 Hemicyclammina sigali – Arkin & Hamaoui, pl. 1, figs 17-18 (?), pl. 2, fig. 1; Cenomanian, Israel.

1969 Hemicyclammina sigali – Sampò, pl. 39, figs. 1-5; pl. 40, fig. 2; pl. 41, fig. 1; Albian-Cenomanian, Iranian Zagros.

1970 Hemicyclammina whitei – Banner, pl. 10, figs. 1-2; late Albian, Qatar.

1970 Hemicyclammina sigali – Banner, pl. 10, figs. 3-8; early Cenomanian, offshore Abu Dhabi.

1973 Hemicyclammina sigali – Berthou, pl. 11, figs. 1-3; late Cenomanian, Portugal.

? 1973 Charentia granulosa n. sp. – Kerdany & Eissa in Kerdany et al., p. 93, pl. 1, figs. 19-26; late Cenomanian, Egypt.

? 1974 Hemicyclammina sigali – Bignot & Poisson, pl. 3, figs. 1-4; Cenomanian, Türkiye.

? 1974 Ismailia neumannae n. sp. – El-Dakkak, p. 173 175, pl. 1, figs. 1-5; Cenomanian, Sinai, Egypt.

1974 Hemicyclammina sigali – Saint-Marc, p. 212-214, pl. 1, figs. 1-6; middle Albian-late Cenomanian, Lebanon (reported range to base Albian).

1974 Hemicyclammina sigali – Radoičić, pl. 8, fig. 1?, pl. 9, fig. 1; Cenomanian, Serbia-Kosovo.

? 1975 Sinainella aegyptiaca n. sp. – El-Dakkak, p. 107 110, pl. 1, figs. 1-7; Cenomanian, Sinai, Egypt.

1976 Hemicyclammina sigali – Kalantari, pl. 19, fig. 4; pl. 22, fig. 16; early Cenomanian, Iranian Zagros.

? 1978 Charentia hasaensis n. sp. – Basha, p. 75, pl. 1, figs. 9-12; late Cenomanian, Jordan.

? 1978 Charentia rummanensis n. sp. – Basha, p. 76, pl. 2, figs. 1-6; late Cenomanian, Jordan.

? 1978 Lituola hasaensis n. sp. – Basha, p. 79, pl. 3, figs. 7-9; late Cenomanian, Jordan.

? 1979 Ammobaculites difformis – Hamaoui, p. 338-340, fig. 1f, non fig. 1a-e; Cenomanian, Israel.

1981 Hemicyclammina sigali – Saint-Marc, pl. 1, fig. 1; Albian-Cenomanian, Lebanon.

? 1985 Hemicyclammina sp. – Bilotte, p. 355, pl. 4, fig. 10; Cenomanian, Pyrenees.

1987 Hemicyclammina sigali – Shakib, pl. 23, figs. 14- 16; Albian, Iranian Zagros.

1987 Hemicyclammina sigali – Simmons & Hart, pl. 10.4, fig. 7; Albian-?early Cenomanian, Oman Mountains.

1988 Hemicyclammina sigali – Sartorio & Venturini, p. 106; early Cenomanian, Iranian Zagros (reported range Albian – Cenomanian).

1988 Hemicyclammina sigali – Berthou & Bengtson, pl. 5e-g; pl. 6e-f, i; Cenomanian, Sergipe Basin, Brazil.

1990 Hemicyclammina sigali – Weidich & Al Harithi, p. 602-603; pl. 2, figs. 8-11; pl. 4, figs. 2-3, 7-9, 12-13; latest Albian – Cenomanian, Jordan.

1990 Hemicyclammina n. sp.? Hamaoui – Weidich & Al Harithi, p. 603; pl. 4, figs. 21-22; latest Albian – Cenomanian, Jordan.

1990 Pseudocyclammina aff. massiliensis Maync – Weidich & Al-Harithi , p. 604, pl. 4, fig. 1; latest Albian – Cenomanian, Jordan.

1990 Haplophragmoides? difformis Hamaoui – Weidich & Al-Harithi , p. 599, pl. 4, fig. 6; latest Albian – Cenomanian, Jordan.

? 1990 Haplophragmoides sp. 2 – Weidich & Al-Harithi, p. 599, pl. 4, fig. 14; latest Albian – Cenomanian, Jordan. 1992 Hemicyclammina sigali – Kalantari, pl. 78; Albian, Iranian Zagros.

? 1993 Ismailia neumannae – Al-Rifaiy et al., pl. 1, fig. 3; late Cenomanian, Jordan.

? 1993 Hemicyclammina evoluta Hamaoui – Al-Rifaiy et al., pl. 1, fig. 4; late Cenomanian, Jordan.

? 1993 Hemicyclammina sigali – Al-Rifaiy et al., pl. 1, fig. 5; late Cenomanian, Jordan.

? 1993 Everticyclammina whitei – Hewaidy & Al-Hitimi, p. 476-477; pl. 3, figs. 9-10; Cenomanian, Qatar.

? 1995 Pseudonummoloculina sp. – Dimitrova, p. 81, pl. 1, fig. 4; early Cenomanian, Bulgaria.

1996 Hemicyclammina sigali – Andreu et al., pl. 1, fig. 3; early Cenomanian, Morocco.

1998 Hemicyclammina sigali – Whittaker et al., p. 40, pl. 59, figs. 3-9; pl. 60, fig. 1; Albian, southern Iraq & offshore Abu Dhabi.

1998 Hemicyclammina whitei – Whittaker et al., p. 40-41, pl. 12, figs. 1-2; pl. 60, figs. 2-7; pl. 61, figs. 1-3; early Cenomanian (= latest Albian), Qatar and Albian, southern Iraq.

1998 Charentia cuvillieri – El-Sheikh & Hewaidy, pl. 1, fig. 8; late Cenomanian, Egypt.

2005 Hemicyclammina sigali – Hart et al., fig. 6f-g; late Cenomanian, Portugal.

2008 Hemicyclammina sp. – Ahmadi et al., pl. 2, fig. 6; early-middle Albian, Iranian Zagros.

2009 Hemicyclammina sigali – Shirazi et al., pl. 1, fig. 9; early Albian, Iranian Zagros.

2010 Hemicyclammina whitei – Forbes et al., fig. 6.7d-e; Albian – early Cenomanian, Oman.

? 2010 Hemicyclammina sigali – Schroeder et al., fig. 11(6); early Albian, Iranian Zagros.

Non 2011 Hemicyclammina sigali – Roozbahani, pl. 2, fig. 4; Albian, central Iran [= simple planispiral form].

2011 Hemicyclammina sigali – Shirazi et al., pl. 2, figs. 11-12; Albian, Iranian Zagros.

? 2012 Hemicyclammina sigali – Ghanem et al., fig. 6b/non 12, 14; early Albian, Syria (range shown as Apti- an – Cenomanian).

2013 Hemicyclammina sigali – Omaña et al., pl. 1, fig. 1; pl. 4, fig. 1; undifferentiated middle – late Cenomanian, Mexico.

? 2013 Hemicyclammina sigali – Ghanem & Kuss, fig. 10/27; early Albian, Syria (range shown as Albian-middle Cenomanian).

? 2015 Hemicyclammina sigali – Moosavizadeh et al., fig. 12m; early Albian, Iranian Zagros.

? 2016 Hemicyclammina sigali – Hosseini et al., fig. 14jl; Barremian, Iranian Zagros.

Non 2016 Hemicyclammina sp. – Ghaseminia et al, fig. 4k; Albian, Iranian Zagros [= simple planispiral form].

Non 2017 Hemicyclammina sigali – Ahmadi et al., pl. 1, fig. 10. [= simple planispiral form].

2018 Hemicyclammina sigali – BouDagher-Fadel, fig. 5.4; pl. 5.6, figs. 12-13; Albian, southern Iraq.

2018 Hemicyclammina whitei – BouDagher Fadel, pl. 5.6, figs. 14-15; Aptian-Albian (= latest Albian), Qatar.

2018 Hemicyclammina sigali – Luger, p. 60, pl. 3, fig. 11; Albian, Somalia.

2019 Hemicyclammina sigali – Omaña et al., fig. 9e; undifferentiated middle-late Cenomanian, Mexico.

? 2019 Hemicyclammina sigali – Shirzade et al., pl. 1, figs. 6, 7; Aptian, Iranian Zagros [lacks alveolar wall].

2020 Hemicyclammina sigali – Haftlang et al., fig. 15c; pl. 1, fig. 6; late Albian, Iranian Zagros.

2020 Hemicyclammina sigali – Afghah et al., fig. 5a; Albian, Iranian Zagros.

2020 Hemicyclammina sigali Maync – Keshavarzi et al. , pl. 1, fig. a; pl. 2, fig. h; Albian, Iranian Zagros.

? 2020 Hemicyclammina sigali – Moosavizadeh et al., fig. 8h; late Aptian-early Albian, Iranian Zagros.

2021 Hemicyclammina sigali – Gholamalian & Fanati Rashidi, pl. 3, fig. 17; Cenomanian, Iranian Zagros.

? 2021 Nezzazata sp. – Dehghanian & Afghah, fig. 8/5; middle Cenomanian, Iranian Zagros.

? 2021 Ismailia neumannae – Shahin & El Baz, fig. 4(2- 3); early Cenomanian, Egypt.

2021 Hemicyclammina sigali – Shapourikia et al., pl. 9e, j; Cenomanian, Iranian Zagros.

2021 Hemicyclammina sigali – Arampour et al., fig. 3g; late Albian, Iranian Zagros.

2021 Hemicyclammina sigali – Keshavarzi et al., fig. 6a; Albian, Iranian Zagros.

2022 Hemicyclammina sigali – Keshavarzi et al., fig. 7a,?9a; Albian, Iranian Zagros.

2022 Hemicyclammina whitei – Simmons & Bidgood, p. 28, figs. 1-4; Albian-Cenomanian, global review.

2023 Hemicyclammina whitei – Simmons & Bidgood, p. 86, fig. 35; early Albian-intra-late Cenomanian, global review.

2024 Hemicyclammina sigali – Arampour et al., fig. 7g; Albian, Iranian Zagros.

Reference Images: Simmons & Bidgood (2022) figs. 1-4.

Taxonomy/Identity: Simmons & Bidgood (2022) carried out a thorough investigation of this species, commonly recorded in the literature as its junior synonym, H. sigali Maync. Hemicyclammina is an involute planispiral genus with an alveolar wall but solid, pointed septa which extend only part way into the chamber lumen in equatorial sections. The otherwise similar genus Everticyclammina has septa projecting from both the outer and inner chamber wall (Banner & Highton, 1990). The solid (“semi-” or “hemi-”) thin septa serve to distinguish the genus from Buccicrenata which has alveolar septa which are continuous outgrowths of the alveolar chamber wall. Pseudocyclammina is also similar but in addition to alveolar septa also has multiple apertures compared to the single slit of Hemicyclammina .

The Late Cretaceous (mostly Coniacian – Campanian) species Hemicyclammina chalmasi (= Dictyopsella chalmasi Schlumberger, 1900 ) differs from H. whitei by virtue of a thicker, coarsely agglutinating wall, and a larger test with chambers increasing in height to produce a peneropliform test. The exoskeleton is particularly well developed in H. chalmasi with long beams and less pronounced rafters. Excellent illustrations of this species are provided by Schlagintweit & Wagreich (2004) and Albrich et al. (2015). A possible Paleocene form of Hemicyclammina , Hemicyclammina plana (= Alveolophragmium planum Bykova, 1939 ) is poorly known ( Simmons & Bidgood, 2022).

Confident Stratigraphic Range: early Albian – intra-late Cenomanian (common throughout).

Uncertain Stratigraphic Range: not applicable.

A frequently encountered species in suitable Albian – Cenomanian facies.

Hart et al. (2005) recorded H. sigali (= H. whitei ) from strata in Portugal confidently assigned to the guerangeri and geslinianum ammonite zones of the late Cenomanian, following earlier records by Berthou (1973); Lauverjat (1976) and Crosaz-Galletti (1979). Saint-Marc (1981) reported the species from latest Cenomanian strata in Lebanon with the ammonites Eucalycoceras palaestinense (Blackenhorn) and Protacanthoceras angolaense (Spath) and the planktonic foraminifera Helvetoglobotruncana praehelvetica (Trujillo) and Whiteinella spp. These records confer an upper range age limit of intra-late Cenomanian.

Pre-Albian records appear to be consistently smaller in size compared with H. whitei and are more likely an ancestral form “ Hemicyclammina ? sp.” (e.g., illustrated as H. sigali from the Barremian of the Iranian Zagros by Hosseini et al. (2016) and the Aptian of offshore Abu Dhabi by Banner (1966; pl. 12, fig., 3b) and Iran by Shirzade et al. (2019) although the alveolar nature of the wall is not demonstrated). A similar, slight larger (0.3 mm diameter) specimen has been illustrated by Özkan & Altıner (2019) from the early Aptian of south- east Türkiye (Arabian Plate) as “ Hemicyclammina ? sp.”.

Although sometimes used as a biozonal marker (e.g. Arampour et al., 2021; Rahbarman et al., 2024), this reflects biofacies and is of very limited correlative value.

Geographic Distribution: Very widespread. Throughout the Caribbean, central Atlantic ( Brazil, Morocco, Iberia) and Neotethys as far east as Oman and Somalia and possibly (unconfirmed) further east in Tibet. Potential ancestral records are located on the Arabian Plate (see Simmons & Bidgood, 2022, 2023).