This dataset contains the digitized treatments in Plazi based on the original journal article Lima, Tarcilla Carvalho De, Oliveira, Cléo Dilnei de Castro, Absalão, Ricardo Silva (2020): Small, rare and little known: new records and species of Cardiomya (Bivalvia: Cuspidariidae) from Brazil. European Journal of Taxonomy 619: 1-20, DOI: https://doi.org/10.5852/ejt.2020.619