2001  Irdanites korni Klug: 507, figs.11-9, 11-10, 18A, 19.
     2002  Irdanites.-Korn & Klug: Fig.64 F, 67 A, B.

Holotype: GPI Tübingen 1849-2045.

Klug, 2001, p.507, Diagnosis: Irdanites without a distinct imprint zone. With subcircular to subtrapezoidal whorl cross section, decreasing relative whorl width (ww/wh = 1.0 at dm =11 mm and ww/wh = 0.85 at dm =55 mm). High to very high whorl expansion rate (2.5 to 3.5 at dm > 15 mm). Suture line with a small external lobe, a broad and shallow lateral lobe, and no internal lobe.

Fig. see TAX6634 (reconstruction), TAX6635 A (suture), TAX6630 A (side view), B (suture).