TABLE 1. Comparison between tentaculitoids species analyzed (L=length of the shell, W=width of the tube, DR=diagonal rings).

  L
(cm)
W
(cm)
DR
(per 0,5 cm)
Apical angle
(degrees)
Tentaculites crotalinus (Salter, 1856) 0.9-2.5 0.14-0.22 4-8 3-7°
Tentaculites jaculus (Clarke, 1913) 1.1-3.7 0.23- 0.46 7-9 8-9°
Tentaculites paranaensis sp. nov. 1-2.8 0.15-0.3 6-11 3-6°
Tentaculites kozlowskii sp. nov. 0.6-1.2 0.06-0.18 13-16 7-8°
Uniconus ciguelii sp. nov. 0.8-2.2 0.15-0.21 6-8 3-8°
Homoctenus katzerii sp. nov. 0.8-1.5 0.05-0.23 6-14 5-8°
Styliolina langenii sp. nov. 0.8-1.8 0.12-0.3 - 7-9°