It is also the largest and heaviest one.
Scientific name of southern cassowary is Casuarius casuarius. The name Casuarius is derived from the Malay language. The term "kasu" means horned, and "weri" means head.
They appeared on Earth about 60 million years ago, 6 million years after the Cretaceous-Paleogene extinction event.
These birds share some dinosaur features: three clawed feet, strong legs, and casqued heads. In addition, DNA studies suggest that cassowaries and emus are the closest relatives of the ratites that lived on the continent of Gondwana.