Tyrannosaurs are a clade of tyrannoraptorans containing fierce meat eating dinosaurs such as Tyrannosaurus rex, as well as smaller tyrannosaurs such as Guanlong. This article is about new taxon and research about tyrannosaurs made in 2013.
- Recent studies showed Eotyrannus a small tyrannosaur was actually a megaraptoran like Megaraptor.
- Recent studies showed Tyrannosaurus rex was a hunter not a scavenger like vultures.
- Lythronax-Also known as the Gore King Lythronax was the earliest tyrannosaurids. But wasn't larger than Tyrannosaurus rex. It was found in Utah and lived after Jurassic tyrannosaurs such as Guanlong. Despite not being bigger than T.rex, it was possibly one of the largest predators of it's area.
- Siats-Siats was named after a monster in Ute Mythology. It was said to be 30 feet although a few people claim it can grow bigger sizes. Although considered to be a carnosaur like Allosaurus, more recent studies showed just like other megaraptorans, it was possibly a tyrannosaur.