US EditionT. rex ancestors crossed from Asia to North America via land bridge 70 million years ago, study finds
- A study led by Cassius Morrison, a paleontology doctoral student at UCL, found that T. Rex ancestors crossed from Asia to North America about 70 million years ago.
- This migration likely occurred via a land bridge across the Bering Strait between Siberia and Alaska during a period supported by past research.
- The ancestors, tyrannosaurids, lived in temperate rainforests somewhat like modern British Columbia and were fewer in number than their herbivorous prey, similar to apex predator patterns today.
- Coauthor Charlie Scherer explained these tyrannosaurids grew large to replace extinct giant carcharodontosaurid theropods, while expert Steve Brusatte said climate aided their repeated size increases.
- The findings imply undiscovered fossils may exist in Asia and suggest cooler climates and ecological changes influenced tyrannosaur evolution and dominance.
30 Articles
30 Articles
New Study Reveals T Rex Likely Evolved in North America
A T. rex named Sue is on display at the Field Museum of Natural History in Chicago, Illinois. Credit: Terence Faircloth – CC BY-NC-ND 2.0 via Flickr. A new study suggests that the T. Rex’s ancestors may have evolved in North America, contradicting the popular theory that the Tyrannosaurus Rex evolved in Asia. The new theory states that when sea levels fell, effectively providing a bridge between the two continents, the T. rex’s ancestors crossed…
T. rex's direct ancestor crossed from Asia to North America, new study finds
Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study led by UCL researchers.
Before it ruled North America, T. rex walked from Asia via Land bridge 70 million years ago , study says
The direct ancestors of Tyrannosaurus rex likely migrated from Asia to North America via a land bridge around 70 million years ago, according to a new study that adds weight to a long-standing paleontologists debate. Researchers led by Cassius Morrison, a doctoral student in palaeontology at University College London (UCL), used mathematical modelling to conclude that the ancestors of T. rex crossed what is now the Bering Strait, between Siberia…
T. rex ancestors crossed from Asia to North America via land bridge 70 million years ago, study finds
By Jack Guy, CNN (CNN) — The direct ancestor of Tyrannosaurus rex would have arrived in North America after crossing a land bridge from Asia, according to a new study. The report is the latest to weigh in on the fierce debate among paleontologists over the origins of the king of the dinosaurs. A team led by Cassius Morrison, a doctoral student of paleontology at University College London, or UCL, used mathematical modeling to conclude that T. re…
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