| At the posterior of the body, the pleurae were fused into a flattened tail-like segment, or pygidium. |
|
| Normally, the pleurae are silky smooth, allowing your lungs to slide easily along your chest wall when you breathe in and out. |
|
| In some cases, the carapace margin, the opisthosomal pleurae, and distal regions of the tail spine are absent. |
|
| The thorax shows the external surface of the anterior half of the axial rings and of the inner portions of the pleurae. |
|
| Longacre emphasized unequally divided pleurae on the pygidium and the presence of an occipital spine as characters separating Calvinella from other dikelocephalids. |
|
| Bilateral thoracoscopy revealed empyema with loculations with beefy, inflamed, thick-walled visceral and parietal pleurae. |
|
| Pneumothorax is a condition characterized by the accumulation of gas between the parietal and visceral pleurae. |
|
