1112


Journal of Paleontology 91(6):1102–1122


Gennari et al. (2011) reported a large number of morphological varieties, especially for different shapes of the sutures. The specimens here are more inflated. The supplementary apertures of specimens can be observed on the middle part of the septal sutures instead of near the junction, and are much narrower, showing a deeply incised slit. The supplementary apertures reported by Gennari (2011) are wider near umbilical region, and even triangular.


Family Cibicididae Cushman, 1927 Genus Cibicides de Montfort, 1808


Cibicides lobatulus (Walker and Jacob, 1798) Figure 6.9–6.11


1798 Nautilus lobatulus Walker and Jacob, p. 642, pl. 14, fig. 36.


1884 Truncatulina lobatulus (Walker and Jacob); Brady, pl. 92, fig.10, pl. 93, figs. 1, 4, 5.


1931 Cibicides lobatula; Cushman, p. 118, pl. 21, figs. 3a–3c. 1988 Cibicides lobatulus;Wang et al., p. 162, pl. 25, figs. 12–14.


1978 Cibicides lobatulus; Cheng and Zheng, p. 232, pl. 21, figs. 2a–2c.


Holotype.—(BMNH ZF2532) from Challenger Station 172, Friendly Islands, Pacific (33m ) (Brady, 1884, pl. 92, fig. 10).


Occurrence.—Widely distributed in coastal water of the world oceans; middle and outer shelf of East China Sea and South China Sea (Wang et al., 1988).


Remarks.—Large variations in morphology are assigned to this species. Specimens with keeled periphery or depressed umbili- cus were reported by Brady (1884). The specimens here are more inflated with a round periphery, while those of Cushman (1931) and Wang (1988) have compressed chambers with obviously lobulated periphery.


Superfamily Rotaliacea Ehrenberg, 1839 Family Rotaliidae Ehrenberg, 1839 Genus Ammonia Brünnich 1772


Ammonia pauciloculata (Phleger and Parker, 1951) Figure 7.1–7.3


1951 “Rotalia” pauciloculata Phleger and Parker, p. 23, pl, 12, figs. 8, 9.


1965 Ammonia nantongensis Ho, Hu, and Wang; He, Hu, and Wang, p. 104, pl. 11, figs. 5a–5c.


1988 Ammonia pauciloculata; Wang et al., p. 166, pl. 27, figs. 8–10.


Holotype.—(Sample 1) from Core 498 (Phleger and Parker, 1951, pl. 12, figs. 8, 9).


Occurrence.—Gulf of Mexico; coastal water in China seas, inner shelf of East China Sea; Quaternary coastal sediments in China; 0–50m (Wang et al., 1988).


Remarks.—Supplementary apertures that are perpendicular to the middle of the septal sutures on the ventral side, as noted by Wang et al. (1988), can be observed in the holotype illustrated


by Phleger and Parker (1951). The specimens in this study and Ammonia nantongensis Ho, Hu, and Wang (1965) also show this morphological character, while the subspecies Ammonia pauciloculata major described by He et al. (1965) cannot be assigned to this species because it has a large number of chambers for the last whorl and straight sutures.


Genus Cavarotalia Müller-Merz, 1980


Cavarotalia annectens (Parker and Jones, 1865) Figure 8.1–8.3


1865 Rotalia beccarii var. annectens Parker and Jones, p. 387, pl. 19, figs. 11a–11c.


1940 Streblus annectens; Ishizaki, p. 49, pl. 3, figs. 12a, 12b, 13a, 13b.


1965 Ammonia annectens; He, Hu, and Wang, p. 103, pl. 11, figs. 3a–3c.


1980 Cavarotalia annectens; Müller-Merz, p. 37, figs. 26, 27. 1988 Cavarotalia annectens;Wang et al., p. 168, pl. 27, figs. 12, 13.


Occurrence.—Miocene in India; shallow water in Pacific and Indian oceans; shelf of China seas; Quaternary in Taiwan, China; Quaternary coastal sediments in East China; 0–50 m, East China Sea (Wang et al., 1988).


Remarks.—Deeply incised, fishbone-like sutures taper from the middle to the periphery in ventral side. The large transparent umbilical plug also distinguishes it from Ammonia.


Family Elphidiidae Galloway, 1933 Genus Cribrononion Thalmann, 1947 Cribrononion subincertum (Asano, 1950) Figure 8.4, 8.5


1950 Elphidium subincertum Asano, p. 10, figs. 56, 57.


1980a Cribrononion subincertum; Wang et al., pl. 9, figs. 22, 23.


1965 Cribrononion sp.; He et al., p. 115, pl. 14, figs. 3a, 3b. 1978 Cribrononion incertum; Zheng et al., p. 58, pl. 8, figs. 15, 16.


1965 Cribrononion gnythosuturatum;He et al., p. 115, pl. 14, figs. 5a, 5b.


1988 Cribrononion subincertum; Wang et al., p. 168, pl. 28, figs. 1–4.


Occurrence.—Shallow water in high-latitude North Pacific and North Atlantic; Recent and Quaternary coastal sediments in Bohai Sea, Yellow Sea, and East China Sea; 0–50m in East China Sea; 10–30% salinity, coastal water off Jiangsu and Zhejiang, China (Wang et al., 1988).


Remarks.—The specimens in this study possess the long slit sutures. Test slightly compressed, as show in Figure 8.4, or inflated (Fig. 8.5). Wang et al. (1988) pointed out that the juvenile forms are often more inflated than the adult. It was reported that the aperture is made up of a row of pores (He et al., 1965). Due to the granular cover on the base of the apertural face, the pores cannot be observed in the specimens illustrated here.


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