Joannisiella oblonga (Hanley, 1846)

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

Joannisiella oblonga (Hanley, 1846)

Figs 12 S , 15 F

Cyrenoidea oblonga Hanley, 1846 a: 10 (plate explanation). Type locality: Philippines. Hanley 1856: 353, pl. 15, fig. 6. Coan and Kabat 2012: 320.

Diplodonta (Joannisiella) oblonga . Lynge 1909: 176.

Cycladicama oblonga . Dheeradilok et al. 1984: pl. 2, figs 6, 7. Robba et al. 2002: 79, pl. 7, fig. 9 a, b. Hylleberg and Kilburn 2003: 174. Robba et al. 2003: tables 3, 4. Robba et al. 2007: 85 (appendix). Nabhitabhata 2009: 389. Yang et al. 2017: 182, fig. 704. Surakiatchai et al. 2018: table 6, pl. 3, fig. 10 a, b.

Joannisiella oblonga . Huber 2015: 341, 829, with in-text figs; C 21436. Wells et al. 2021: 42.

Referred material.

CUF - NKNY - B 09, B 17 (59 L + 66 R shells; Figs 12 S , 15 F ).

Habitat.

Muddy bottom with soft clay, muddy sediments on mud flats, and in the shallow waters from intertidal zones down to 36 m depth ( Huber 2015; Yang et al. 2017).

Distribution.

Indo-West Pacific, from Japan to Indonesia and the Philippines ( Huber 2015; Yang et al. 2017). Records of fossils from the Middle Miocene to Holocene in Indonesia, Japan, the Philippines, Taiwan, and Thailand ( Robba et al. 2002; Surakiatchai et al. 2018).

Record in Thailand.

Gulf of Thailand ( Wells et al. 2021).

Taxonomic remarks and comparisons.

This species is characterised by its elongate, ovate-triangular shaped, and posteriorly grooved shell ( Robba et al. 2002; Huber 2015).

Superfamily Veneroidea Rafinesque, 1815

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 15. Bivalves A Pegophysema bialata B Geloina bengalensis C Lutraria complanata D Standella pellucida E Tellinides conspicuus F Joannisiella oblonga.