Silesaurs are definitely dinosauromorphs (close relatives of dinosaurs) but were they true dinosaurs?

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Dinosaur of the day Planicoxa, an iguanodont known from its flat hips with a species name that means "poison".

In dinosaur news this week:

• There’s a new silesaurid, Itaguyra occulta, whose name means "Stone Bird" in Tupi—a language from Southern Brazil where it was found
• A new large femur found in Zambia may have been from a 10ft (3m) long silesaur—quite large for the
• Probable silesaur arm and leg bones from the Late Triassic were described from what is now Texas

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