Bivalvia - Cardiida - Arcticidae

Full reference: R. B. Newton. 1895. On a collection of fossils from Madagascar obtained by the Rev. R. Baron. Quarterly Journal of the Geological Society of London 51:72-92

Belongs to Pseudotrapezium according to R. B. Newton 1895

Sister taxa: Pseudotrapezium depressum, Pseudotrapezium elongatum

Ecology: facultatively mobile infaunal suspension feeder