Siliqua minima ( Gmelin, 1791 )

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

Siliqua minima ( Gmelin, 1791)

Figs 12 I , 17 B

Solen minimus Gmelin, 1791: 3227. Type locality: Tranquebar.

Siliqua minima . Lynge 1909: 278. Swennen et al. 2001: 47, 84, text-fig. 126, fig. 126. Robba et al: 2002: 93, pl. 12, fig. 11 a, b. Robba et al. 2003: tables 3 – 5. Robba et al. 2007: 86 (appendix). Nabhitabhata 2009: 424. Negri et al. 2014: table 3. Yang et al. 2017: 218, fig. 822. Wells et al. 2021: 19.

Siliqua cf. minima . Hylleberg and Kilburn 2003: 195 – 196, pl. 8, fig. 10. Thach 2005: 281.

Siliqua (Neosiliqua) minima . Huber 2010: 273, with in-text fig. Huber 2015: C 12603.

Referred material.

CUF - NKNY - B 16 (6 L + 6 R shells; Figs 12 I , 17 B ).

Habitat.

Sand and mud bottoms from intertidal zones down to 30 m depth ( Huber 2015).

Distribution.

Indian Ocean; Indo-West Pacific, from Japan to the Philippines ( Robba et al. 2002; Huber 2015). Records of fossils from the Holocene in Thailand ( Robba et al. 2002).

Record in Thailand.

Gulf of Thailand ( Wells et al. 2021).

Taxonomic remarks and comparisons.

This species is recognised based on the descriptions and figures in Robba et al. (2002) and Huber (2010), specifically in having an ovate-rectangular and inequilateral shell with a widely rounded and deep pallial sinus, the lower border of which coincides with the pallial line, and a thin and slightly oblique inner rib.

Class Scaphopoda Bronn, 1862

Order Dentaliida Starobogatov, 1974

Figures

Figure 12. Size comparison of bivalves, scaphopod and other invertebrates found in this study A Tegillarca nodifera B Volachlamys singaporina C Tegillarca granosa D Noetiella pectunculiformis E Magallana cf. gigas F Estellacar olivacea G Anadara indica H Dentalium variabile I Siliqua minima J Corbula fortisulcata K Fistulobalanus kondakovi L Placamen lamellatum M Martesia striata N Potamocorbula sp. O Jupiteria puellata P Saccella mauritiana Q Paratapes undulatus R Dosinia dilecta S Joannisiella oblonga T Temnotrema siamense U Pholas orientalis.

Figure 17. Bivalves and other invertebrates A Cultellus maximus B Siliqua minima C Dentalium variabile D Thalassina sp. E Fistulobalanus kondakovi F Megabalanus cf. tintinnabulum G Temnotrema siamense.