1933 Marathonites invariabilis Ruzhencev: 73, pl.5 fig.1-3, textfig.5a.
1938 Kargalites invariabilis.-Ruzhencev: 259, textfig.9c.
1939 Marathonites romanowskyi var. invariabili.-Chernov: 184, pl.45 fig.3, textfig.89.
1940g Kargalites invariabilis.-Ruzhencev: pl.3 fig.13, pl.6 fig.13-16, textfig.19.
1950 Marathonites (Neomarathonites) invariabilis: 194, fig.80b.
1956 Marathonites (Almites) invariabilis.-Ruzhencev: 244, pl.37 fig.3-5, pl.38 fig.1.
1973 Marathonites invariabilis.-Davis: 87, pl.22 fig.8-10.
1986 Almites invariabilis.-Bogoslovskaya: 62; pl.46 fig.3, pl.59 fig.2.
1990 Almites invariabilis.-Bogoslovskaya: textfig.1.
2001 Marathonites invariabilis.-Shigeta, Zakharov & Mapes: fig.5, 3,3.

Fig. TAX3877 A-M (sutural development). Fig. see TAX3872A B (cross-section). Fig. see TAX2862 B (suture).