Some Dinosaurs Sported Scales and Feathers as an Evolutionary Advantage

X-Rays and UV examinations of Psittacosaurus skin shine light on dinosaur transition from reptile to bird.

By Paul Smaglik
May 21, 2024 8:00 PMMay 21, 2024 8:08 PM
Dinosaur Skin
Studied dinosaur specimen njues-10 under natural (upper half) and UV light (lower half) showing the orange-yellow fluorescence of the fossil skin. (Credit: Zixiao Yang)

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The question of whether some dinosaurs were covered with either scales or feathers has a new answer: both.

Researchers examined the skin of the feathered dinosaur Psittacosaurus from the early Cretaceous period (135 million years to 120 million years ago) and found “zones” of reptile-style scales as well as “zones” where feathers were present, according to a study in Nature Communications. The early Cretaceous marks the period when some dinosaurs were evolving into birds.

Rare Skin Sample

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