In the section "Investigating Life: Sniffing Out the Origin of Feathers",large nasal cavities were found in therapsids,extinct reptiles thought to be ancestors of mammals.What did the scientists conclude from this observation?

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The presence of large nasal cavities in therapsids suggests that they were able to regulate their body temperature internally (endothermy) before the evolution of fur, which is a key feature of mammals. This is based on the idea that the large nasal turbinates in therapsids would have been used for heat exchange, allowing for more efficient internal regulation of body temperature.

In the Section "Investigating Life: Sniffing Out the Origin of Feathers",large