1874  Goniatites Chemingensis var. equicostatus Hall, p.3.
     1875  Goniatites Chemingensis var. equicostatus.-Hall, p.
           135.
     1876  Goniatites Chemingensis var. equicostatus.-Hall, pl.
           69 fig.10.
     1879  Goniatites Chemingensis var. equicostatus.-Hall, p.
           469, pl.69 fig.10.
 pt. 1899  Sandbergeroceras Chemungense.-Clarke, p.108.
     1903  Sandbergeroceras chemungense var aequicostatus.-
           Clarke & Ruedemann, p.649.
     1935  Sandbergeroceras chemungense equicostatum.-Chadwick,
           p.320.
     1938  Schindewolfoceras? equicostatum.-Miller, p.184, pl.36
           fig.12.