The new silesaur Gondwanax was named from Southern Brazil and may show a transition between silesaurs and neornithischians; The new tyrannosaurid Labocania aguillonae helps solidify Labocania as a true tyrannosaurid; Plus a new huge Pachyrhinosaurus skull and a new Mesozoic swimming bird.

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Dinosaur of the day Kwanasaurus, a silesaur known for its teeth and jaws that seem like they were evolved for eating plants.

In dinosaur news this week:

• A new, giant, Pachyrhinosaurus (ceratopsian) skull nicknamed “Big Sam” was found in Northern Alberta, Canada
• There’s a new silesaur, Gondwanax paraisensis, from Southern Brazil
• There’s a new tyrannosaurid species, Labocania aguillonae, from Northern Mexico
• There’s a new euornithean bird, Shuilingornis angelai, is one of the earliest known birds with semi-aquatic features

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