‘Larger horns, smaller brains’: The dinosaur lesson humans cannot ignore

Produced by: Manoj Kumar

Sensory Decline

Ceratopsian dinosaurs, including Triceratops, evolved to have weaker senses of smell and hearing, as revealed by a study published in Cambridge University Press.

Brain Shrinkage

Early ceratopsians had larger brains relative to their body size, but as they grew bigger, their encephalization decreased, resulting in reduced sensory reliance.

Bipedal Shift

Early horned dinosaurs walked on two legs, but their evolutionary journey saw a shift to quadrupedal locomotion as their size increased.

Virtual Analysis

Researchers used advanced virtual modeling to reconstruct the brain structures (endocasts) of ceratopsians, uncovering how sensory adaptations evolved.

High-Frequency

Smaller, early ceratopsians like Yinlong had heightened olfactory abilities and could hear higher frequencies, unlike their larger, later relatives.

Tech Dependency

Dr. Fenglu Han warns that humans might face similar sensory declines as we become overly dependent on technology, a lesson drawn from these dinosaurs.

Evolution’s Cost

Larger horns and frills came at a sensory cost for ceratopsians, suggesting that physical adaptations can sometimes trade off with cognitive or sensory capabilities.

Behavioral Warning

The study highlights the importance of human choices, emphasizing that unlike dinosaurs, humans have the agency to shape their future evolution.

Modern Parallels

The research draws a cautionary parallel between dinosaurs’ evolutionary limitations and the potential risks of human over-reliance on artificial intelligence.