An investigation into the cranial cavities of ancient lungfish offers insight into the evolution of early tetrapods.
investigations into ancient lungfish fossils could help. The studies suggest important information about the formation and the function of the first tetrapod brains.Scientists theorize that the tetrapods, the set of traditionally four-limbed, land-living vertebrates that includes amphibians, reptiles and mammals, all evolved out of ancient fish. In the Middle Devonian period, they say, the powerful, fleshy fins of lobe-finned fish turned into limbs, and the tetrapod appeared for the first time.
"Our discovery shows that the brains of lungfish have been evolving constantly throughout their 400-million-year history," says primary study author Alice Clement, a paleontology research fellow from Flinders University, in a. "It suggests they have likely always relied on their sense of smell rather than vision to navigate their environments. This is quite unlike other fish which use sight much more powerfully.
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