1937  Prothalassoceras caddoense Plummer & Scott: 355, pl.36
           fig.4-6.
     1940  Aristoceras ? caddoense.-Ruzhentsev: 526.
     1950  Eothalassoceras caddoense.-Miller & Downs: 207,
           text-fig.7, pl.34 fig.5,6, pl.35 fig.6.
     1994  Aristoceras caddoense.-Boardman,Work,Mapes & Barrick:
           65, pl.4 fig.17,18.