pt. 1865 Goniatites verna Barrande: pl.9 fig.6,11-13.
pt. 1867 Goniatites verna Barrande: 41.
1918 Crickites Holzapfeli.-Wedekind, p.134, textfig.39a-c.
1983 Agoniatites (Agoniatites) praeceps Chlupac & Turek:38, pl.8 fig.1-6, textfig.5.
2000 Chlupacites praeceps.--Klug, Korn & Reisdorf: 49, 50.
2002 Chlupacites praeceps.-Korn & Klug: Fig.73 D.
2002 Chlupacites praeceps.-Klug: Fig.27 D, E, pl.2 fig.2, 4.

Fig. TAX1550 A-B (cross-sections), C-D (suture).

Umbilicus without perforation

Deep and broad dorsal lobe

Parabolic umbilical saddle

Distinctly asymmetrical lateral lobe

Almost smooth surface of the lateral sides of late whorls. Moderate shell expansion.

No ventrolateral sulci