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° |
