1909  Goniatites newsomi.-Girty: 62, pl.12 fig.11,11a.
pt. 1937  Neoglyphioceras newsomi.-Plummer & Scott: 186.
pt. 1937  Neoglyphioceras entogonum.-Plummer & Scott: 186, pl.9 fig.3 (non fig.1,2).   
     1948  Lyrogoniatites cloudi Miller & Youngquist: 660, pl.94 fig.1-3.
     1952  Lyrogoniatites utahensis Miller, Youngquist & Nielsen: 154, pl.25 fig.1-7, pl.26 fig.1,2,14,15, textfig.1,2.
     1965  Neoglyphioceras cloudi.-Gordon: 200, pl.20 fig.12-14,  textfig.50D,E,J.
     1971  Pachylyroceras cloudi.-Ruzhentsev & Bogoslovskaya: 244, pl.21 fig.3,4.
     1983  Pachylyroceras cloudi.-Oliveira & Wagner-Gentis: 23, pl.6 fig.2-3, textfig.11a-c.
     1999  Pachylyroceras cloudi.-Titus: 157.

Holotype: USNM 113011.

Fig. TAX2256 A-B (suture).