‘The missing link’: Calgary researchers discover new early tyrannosaur species
Global News
The findings were published Wednesday in the British weekly scientific journal 'Nature.'
Scientists from the University of Calgary have discovered a new dinosaur specimen that they say appears to be the “missing link” in the evolution of tyrannosaurs.
The specimen was originally discovered in Mongolia’s Gobi Desert over 50 years ago in the 1970s. But its significance wasn’t recognized until Darla Zelenitsky, an associate professor in the university’s faculty of science, sent graduate student Jared Voris to Mongolia on a research trip.
“He was there a couple of years ago on this research trip and looked at the fossil and texted me (that) he thought it was a new species. I was like, ‘yay,'” Zelenitsky told The Canadian Press.
“I said, ‘This is good, but we don’t want to jump the gun on this.’ It turned out it (was) a new species.”
The species, Khankhuuluu mongoliensis — meaning “Dragon Prince” or “Prince of Dragons of Mongolia” — is believed to have crossed via a land bridge from Siberia to Alaska roughly 85 million years ago.
Zelenitsky said it appears to sit on the evolutionary scale between smaller tyrannosauroids and tyrannosaurs.
“It’s the missing link between smaller tyrannosauroids and the large predatory tyrannosaurs,” she said.
“This missing link was around 750 kilograms. Its ancestors were a couple of hundred kilograms and just tiny, but then when you get to tyrannosaurs proper, they were over a thousand kilograms, up to estimates of 5,000 kilograms.”
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