“We’re trying to flesh out what the entire dinosaurian ecosystem was at that time,” Zanno said. Tyrannosaurus Rex Dinosaur T-Rex Archaeology Fossil Jurassic Reptile Animal Prehistoric Mascot Art Logo.

It is the oldest known relative of T-rex and likely upset Siats as top predator.īut that still leaves several big gaps in dinosaur evolution. t-rex print, dinosaur wall decor, tyrannosaurus rex PRINTABLE nursery art, dinosaur gift. The 80 million-year-old fossil was found by a team led by Mark Loewen of the University of Utah in the Grand Staircase-Escalante National Monument in south-central Utah. Lythronax argestes (below), which translates to “king of gore,” was an ancestor to T-rex. After four years of preparation, Jane was put on display at Rockford, Illinois' Burpee Museum of Natural History as the centerpiece of an exhibit called 'Jane: Diary of a Dinosaur. Understand the difference between T-rex and Dinosaur. Jane the nickname given to a fossil specimen of small tyrannosaurid dinosaur (probably a juvenile Tyrannosaurus rex, officially known as BMRP 2002.4.1, discovered in the Hell Creek Formation in southern Montana. Find out what connects these two synonyms. But at the time they co-existed, the tyrannosaurids would’ve been bullied by Siats and probably tried to steer clear of them because of the size difference, Zanno says.Įarlier this month another dinosaur was discovered that lived during the 120 million to 60 million year gap. The words T-rex and Dinosaur might have synonymous (similar) meaning. “It extends the range of this group both in space and in time so we learn some more about this enigmatic group of dinosaurs from this new discovery,” D’Emic said.Īt some point between 98 million and 80 million years ago, Siats likely went extinct and the tyrannosaurids became the apex predators. This is also the first North American carcharodontosaur found outside of Wyoming, Oklahoma and Texas. The discovery of Siats, though, means that the carcharodontosaur family ruled the ecosystem 20 million years longer than originally thought, says vertebrate paleontologist Michael D’Emic of Stonybrook University. Credit: Lindsay Zanno / Artist: Julio Lacerda )

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