41. In tetrapods , the ileocaecal valve is always present, opening into the colon. 42. Herpetology is concerned with poikilothermic, ectothermic tetrapods . 43. Another example is the cranial nerves in tetrapods . 44. The Fremouw Formation preserves many tetrapod fossils that span the refugium for these animals. 45. Thus it is likely that all bony fish / tetrapods encode IFN-?. 46. They belong to the Seymouriamorpha, but their affinites to extant tetrapods are debated. 47. The game starts from basal tetrapods , the very first land dwellers, amphibians. 48. Tetrapods evolved from animals with fins such as found in lobe-finned fishes.49. These characteristics account for why osteichthyans are accepted as the sister group of tetrapods . 50. The elpistostegalid fish are considered the most apomorphic of fish in comparison to tetrapods .
