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Study Reveals Early Mammals Had Dark Coats to Evade Predators

Research suggests early mammals were nocturnal with uniform dark fur, helping them avoid predation during the Mesozoic era.

Image
Life reconstruction of Shenshou lui, an extinct squirrel-like euharamiyidan species from the Middle Jurassic of China. Image credit: Nobu Tamura, http://spinops.blogspot.com.

Overview

  • Scientists analyzed melanosomes in fossilized hairs from six early mammals, finding evidence of uniformly dark brown or gray fur.
  • The study supports the theory that early mammals were nocturnal, using dark coloration as camouflage against dinosaur predators.
  • Dark fur may have also provided thermal benefits and durability, aiding survival in harsh environments.
  • The research highlights limited color diversity in early mammals compared to modern species, which evolved varied patterns and hues after the extinction of dinosaurs.
  • Experts emphasize the need for further studies to explore the evolution of mammalian coloration and its ecological implications.