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Massive asteroid that eradicated dinosaurs when it crashed into Earth was not alone: Researchers
and one of them will revisit in 27 years Though the other space rock was much smaller than the asteroid that caused the mass extinction of dinosaurs, it was large enough to leave scars on the face ...
National Geographic news3y
Pachycephalosaurus Wyomingensis
Scars on fossil remains have been interpreted as reinforcing this hypothesis, though other research is contradictory. The dinosaur's neck vertebrae might not have been strong enough to survive ...