Potamocorbula sp.

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

Potamocorbula sp.

Figs 12 N , 16 E

Referred material.

CUF - NKNY - B 26 (112 shells; Figs 12 N , 16 E ).

Habitat.

Mostly present in intertidal zones, estuarine and brackish habitats ( Huber 2015).

Distribution.

This genus is mostly distributed in the Indian Ocean and Indo-West Pacific, except for the species Potamocorbula adusta ( Reeve, 1844) , which is recorded only from West Africa ( Huber 2015).

Taxonomic remarks and comparisons.

These specimens are assigned to Potamocorbula based on the descriptions in Coan (2002), specifically in having smooth shells. Currently, there are a total of nine species in this genus ( Huber 2015; MolluscaBase 2023), in which two species, P. fasciata (Reeve, 1843) and P. laevis ( Hinds, 1843) , are recorded from Thailand ( Wells et al. 2021). However, our specimens have a more quadrate shell shape, probably suggesting the presence of other different species.

Superfamily Pholadoidea Lamarck, 1809

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 16. Bivalves A Dosinia dilecta B Paratapes undulatus C Placamen lamellatum D Corbula fortisulcata E Potamocorbula sp. F, G Martesia striata G showing the shells with burrow casts along with mangrove roots H Pholas orientalis I calcareous burrows of Teredinidae indet.