Bivalvia - Solemyida - Solemyidae
Parent taxon: Acharax according to J. B. Bailey 2021
See also Bailey 2011 and Carter 1990
Sister taxa: Acharax bainii, Acharax belenensis, Acharax clarificata, Acharax costellata, Acharax cylindrica, Acharax doderleini, Acharax dunnensis, Acharax frenademezi, Acharax herberti, Acharax holmwoodensis, Acharax incertis, Acharax johnsoni, Acharax normalis, Acharax parallela, Acharax petschorica, Acharax primaeva, Acharax radiata, Acharax solikamica, Acharax stantoni, Acharax ventricosa, Solemya (Acharax) burica, Solemya (Acharax) dalli, Solemya (Acharax) muroensis
Subtaxa: Acharax (Nacrosolemya) trapezoides
Ecology: facultatively mobile infaunal deposit feeder-chemosymbiotic
Distribution:
• Carboniferous of United States (10: Illinois, Maryland, Missouri, New Mexico collections)
Total: 10 collections each including a single occurrence