Table 2 The table shows reconstructions of volumes and densities of Passaloteuthis bisulcata, Hibolithes semisulcatus, and Clarkeiteuthis conocauda, which were used for the calculations of the centre of mass and buoyancy of this species29,30.
From: Predatory behaviour and taphonomy of a Jurassic belemnoid coleoid (Diplobelida, Cephalopoda)
Bodypart | Material | Density (g/cm3) | Volume (cm3) | Weight (g) |
|---|---|---|---|---|
Passaloteuthis | ||||
Arms | Organic | 1.055 | 27.500 | 29.013 |
Head | Organic | 1.055 | 113.730 | 119.985 |
Muscular mantle | Organic | 1.055 | 349.109 | 368.310 |
Proostracum min. | Chitinous | 1.48 | 0.407 | 0.603 |
Proostracum max. | Chitinous | 1.48 | 2.036 | 3.014 |
Phragmocone total volume | 31.835 | |||
Phragmocone hard parts (0% liquid) | Aragonitic | 2.620 | 0.856 | 2.243 |
Liquid inside phragmocone 30% | Cameral liquid | 1.013 | 9.294 | 9.414 |
Phragmocone filled 30% | Aragonitic/cameral liquid | 1.013/2.620 | 10.150 | 11.658 |
Rostrum min. | Calcite | 1.100 | 6.239 | 6.863 |
Rostrum max. | Calcite | 1.700 | 6.239 | 10.607 |
Hibolithes | ||||
Arms | Organic | 1.055 | 24.020 | 25.341 |
Head | Organic | 1.055 | 7.940 | 8.377 |
Muscular mantle | Organic | 1.055 | 108.856 | 114.843 |
Proostracum min. | Chitinous | 1.48 | 0.126 | 0.186 |
Proostracum max. | Chitinous | 1.48 | 0.629 | 0.931 |
Phragmocone total volume | 21.375 | |||
Phragmocone hard parts (0% liquid) | Aragonitic | 2.620 | 0.000 | 0.000 |
Liquid inside phragmocone 30% | Cameral liquid | 1.013 | 6.413 | 6.496 |
Phragmocone filled 30% | Aragonitic/cameral liquid | 1.013/2.620 | 6.413 | 6.496 |
Rostrum min. | Calcite | 1.100 | 12.850 | 14.135 |
Rostrum max. | Calcite | 1.700 | 12.850 | 21.845 |
Rostrum max. | Calcite | 1.700 | 6.239 | 10.607 |
Clarkeiteuthis | ||||
Arms | Organic | 1.055 | 8.629 | 9.103 |
Head | Organic | 1.055 | 10.011 | 10.561 |
Muscular mantle | Organic | 1.055 | 104.364 | 110.104 |
Proostracum min. | Chitinous | 1.480 | 0.034 | 0.050 |
Proostracum max. | Chitinous | 1.480 | 0.579 | 0.856 |
Phragmocone total volume | 37.656 | |||
Phragmocone hard parts (0% liquid) | Aragonitic | 2.620 | 0.000 | 0.000 |
Liquid inside phragmocone 30% | Cameral liquid | 1.013 | 11.297 | 11.444 |
Phragmocone filled 30% | Aragonitic/cameral liquid | 1.013/2.620 | 11.297 | 11.444 |
Rostrum | 0.00 | 0.000 | 0.000 | |
