1937  Prothalassoceras inexpectans Miller & Owen: 418, pl.52 fig.12-15, textfig.4.
     1940  Eothalassoceras inexpectans.-Miller & Furhish: 105, textfig.27A.
     1943  Eothalassoceras inexpectans.-Miller & Unklesbay: 12, pl.1 fig.6,textfig 9A-D.
     1950  Eothalassoceras inexpectans.-Ruzhentsev: textfig.37b.
     1957  Eothalassoceras inexpectans.-Miller, Furnish & Schindewolf: L69, textfig.109A.
     1962  Eothalassoceras inexpectans.-Unklesbay: 116, pl.15 fig.2-4, textfig.15.
     1983  Eothalassoceras inexpectans.-Kullmann: 234, textfig.3B.
     1994  Eothalassoceras inexpectans.-Tanabe, Landman & Mapes: 390, fig. 4 2.

See Fig. TAX3087 (suture), TAX3087A A, TAX5215A A (cross-section).