Table 1. Conch dimensions (in millimetres) and proportions for Girtyoceras hamiltonense Korn and Titus, 2011, from the Sierra Diablo.
Specimen dm ww wh uw ah ww / dm ww / wh uw / dm WER
NPL 68361 21.9 9.1 10.9 4.0 7.0 0.42 0.83 0.18 1.94
same 17.3 8.4 8.5 3.6 0.49 0.99 0.21
NPL 68362 14.8 6.7 6.9 3.7 0.45 0.97 0.25
UTSA 07062 10.7 5.3 4.3 3.0 0.50 1.23 0.28