Could the simple act of chewing have helped some species survive mass extinction?
In short: Following the asteroid impact 66 million years ago, the planet transformed into a desolate wasteland. While most dinosaurs perished, small mammals and specific lizard-like reptiles endured. This video examines how their shared, highly efficient ability to chew food may have been the critical factor that allowed them to survive the catastrophe.
The extinction event 66 million years ago left the Earth in darkness, eliminating non-avian dinosaurs. Among the few groups that managed to persist were tiny mammals and a lineage of lizard-like reptiles. Despite their evolutionary distance, these survivors possessed a specialized biological trait: the capacity to process food through thorough chewing.
This mechanical advantage in digestion likely provided a significant edge in a resource-scarce environment. By maximizing the nutritional intake from available food sources, these animals were better equipped to withstand the harsh conditions that followed the asteroid impact.
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Sources
- Summary by Intellect · source: How Chewing May Have Beat Extinction
- Also: www.pbs.org — Eons | How Chewing May Have Beat Extinction | Season 8 | Episode 6
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