Table 3.
Comparison of thickness of selected skin layers in vertebrates that use percutaneous gas exchange. All values are in μm
| Species | Skin component | |||
|---|---|---|---|---|
| Epidermis | Stratum corneum | Dermis | Diffussion distance | |
| Amphibia | ||||
| European frog (Rana temporaria) * | 80–100 | 5 | NR | NR |
| African clawed frog (Xenopus laevis) * | 16–22 | NR | NR | NR |
| European salamander (Salamandra maculosa) * | 40–60 | 5 | NR | NR |
| Fire salamander (Salamandra salamandra) | 20 | 10 | 248 | 31 |
| Northern leopard frog (Lithobates pipiens) | 25 | 3 | 178 | 41 |
| Mammals | ||||
| Epauletted fruit bat (Epomorphorus wahlbergi) wing web skin** | 9.1–10.5 | 3.7–4.4 | 15.5 | 26.8 |
| Quokka wallaby (Setonix brachyurus) neonate*** | 29.97 | 4.87 | NR | 30–35 |