Were early mammals truly nocturnal, or did we just assume they were?
In short: For years, the scientific consensus held that early mammals were strictly nocturnal while dinosaurs dominated the day. New fossil evidence and biological studies of dinosaur species are challenging this long-held assumption, revealing a more complex picture of ancient life.
Researchers have long operated under the belief that the small mammals of the dinosaur era were exclusively active at night. However, recent investigations into mammalian fossils and the biological traits of various dinosaur species have begun to overturn this traditional view.
This shift in understanding highlights how ongoing paleontological discoveries continue to refine our knowledge of how ancient creatures interacted with their environments, suggesting that the divide between diurnal dinosaurs and nocturnal mammals may not have been as rigid as once thought.
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Sources
- Summary by Intellect · source: When Mammals Only Went Out At Night
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