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Extinction vs. New Species
“It is not the strongest of the species that survives, not the most intelligent that survives.
It is the one that is the most adaptable to change.” - Charles Darwin

MEET T. REX’S TEENY COUSIN WHOSE NAME MEANS ‘IMPENDING DOOM’

3/18/2019

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Before Tyrannosaurus rex became the towering king of dinosaurs, its other tyrannosaur cousins were much smaller, roughly the size of a deer. The evolution of these smaller versions into T. rex is well documented in Asia, but in the North American fossil record, there’s been a 70-million-year gap in evolutionary records—until now.
Now, fossil evidence of a new tyrannosaur species closes that gap by about 15 million years. The new species is dubbed Moros intrepidus and it roamed what is now modern-day Utah about 96 million years ago, according to a new study published in Communications Biology. This pint-size T. rex predecessor—whose name is Greek for impending doom—might just help scientists understand how tyrannosaurs eventually rose to the top of the food chain in North America.

SMITHSONIAN
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  • Adventure & Exploration
    • Ancient Math: The Mystery of Notation
    • Human Capital: Final Frontier
    • Thought Leadership Series
    • The Politics of Education: The Reform Agenda
  • Learning Resources
    • Astronomy
    • Biology >
      • Extinction vs. New Species
    • Chemistry >
      • Chemistry of FIREWORKS
    • Earth Science
    • FORENSICS: APPLIED SCIENCES
    • Physics >
      • The Physics of DANCE
      • Physics of RIDES
      • Paideia
  • Ancient Battles
    • Hominoids: Physical Anthropology
    • Treasures & Shipwrecks
    • Pre-Colombian Civilization
    • Food & Migrations
    • Extinct Empires & Civilizations
    • Statesmen: Achievement of Politics
    • Paleolithic - Mesolithic - Neolithic Achievements
    • Hieroglyphs & Non-Phonetic Alphabets
  • About
  • Contact
  • Science & Christian Humanism