Alternative combination: Goniomya singaporensis
Synonyms: Allorisma insolitum Thomas 1928, Goniomya scrivenori Newton 1906, Goniomya uhligi Holdhaus 1913, Sanguinolites insolitus Thomas 1928, Undulomya pleiopleura Fletcher 1946
Full reference: R. B. Newton. 1906. Notice of some fossils from Singapore discovered by John B. Scrivenor, FGS, geologist to the Federated Malay States. Geological Magazine, New Series, Decade V 3:487-496
Sister taxon: Undulomya rugulata
- Undulomya singaporensis: BM L19154. Its type locality is Mount Guthrie, Tanjong Pagar, which is in an Artinskian/Roadian marine mudstone in Singapore.
- Allorisma insolitum:
- Goniomya scrivenori: Its type locality is Mount Guthrie, Tanjong Pagar, which is in an Artinskian/Roadian marine mudstone in Singapore.
- Goniomya uhligi:
- Undulomya pleiopleura: UWA WF10.1A, a valve (Right valve). Its type locality is UWA WF10.1, Coolkilya Flat, Wandagee Hill, which is in a Roadian coastal siliciclastic in the Coolkilya Formation of Australia.
Ecology: facultatively mobile infaunal suspension feeder
Average measurements (in mm): shell 55.8 x 16.4, valve 81.5 x 30.0