Pseudoneptunea varicosa ( Röding, 1798 )

Jirapatrasilp, Parin, Cuny, Gilles, Kocsis, László, Sutcharit, Chirasak, Ngamnisai, Nom, Charoentitirat, Thasinee, Kumpitak, Satapat & Suraprasit, Kantapon, 2024, Mid-Holocene marine faunas from the Bangkok Clay deposits in Nakhon Nayok, the Central Plain of Thailand, ZooKeys 1202, pp. 1-110 : 1-110

Pseudoneptunea varicosa ( Röding, 1798)

Figs 4 K , 7 A

Neptunea varicosa Röding, 1798: 116. Type locality: unknown.

Siphonalia (Pseudoneptunea) aff. varicosa . Tesch 1915: 53, pl. 80, fig. 114 a, b.

Pseudoneptunea varicosa . Cernohorsky 1975: 217 – 218, figs 10 – 12. Way and Purchon 1981: 318. Swennen et al. 2001: 56, 128, fig. 428. Robba et al. 2004: 106 – 107, pl. 14, fig. 5 a, b. Dharma 2005: 100, pl. 25, fig. 7 a, b; 312, pl. 121, fig. 9 a, b. Thach 2005: 135, pl. 39, figs 12, 15. Robba et al. 2007: 93 (appendix). Nabhitabhata 2009: 148. Sanpanich and Duangdee 2013: 63. Wells et al. 2021: 95.

Referred material.

CUF - NKNY - G 13, G 16, G 17 (25 shells; Figs 4 K , 7 A ).

Habitat.

Shallow water at a depth from 10 to 15 m ( Thach 2005).

Distribution.

Indo-West Pacific, from Vietnam to Indonesia ( Robba et al. 2004; Dharma 2005; Thach 2005). Records of fossils from the Pliocene and Quaternary in Indonesia and from the Holocene in Thailand ( Robba et al. 2004).

Record in Thailand.

Gulf of Thailand and Andaman Sea ( Wells et al. 2021).

Taxonomic remarks and comparisons.

This species is recognised based on the descriptions and figures in Cernohorsky (1975) and Robba et al. (2004), specifically in having subangulate whorls and a sculpture of crisp main spirals with an occasional intermediate spiral thread.

Figures

Figure 4. Size comparison of gastropods found in this study A Brunneifusus ternatanus B Murex trapa C Indothais lacera D Pristiterebra miranda E Chicoreus capucinus F Indothais gradata G Ellobium aurisjudae H Inquisitor vulpionis I Turricula javana J Architectonica perdix K Pseudoneptunea varicosa L Cassidula nucleus M Pseudoetrema fortilirata N Paradrillia melvilli O Duplicaria tricincta P Granuliterebra bathyrhaphe Q Comitas ilariae R Cylichna modesta S Maoritomella vallata.

Figure 7. Gastropods A Pseudoneptunea varicosa B Brunneifusus ternatanus C Nassarius micans D Nassarius siquijorensis E Chicoreus capucinus F Indothais gradata.