In Depth Devincenzia was one of the larger terror birds but was still more gracile than some such as Brontornis. This implies that Devincenzia would have had a greater reliance upon speed and agility while hunting. Actually attacks upon prey may have been a series of heavy downward blows from its beak onto the head … Read more
Kelenken: Research Database Phorusrhacidae (Gruiformes) · Miocene (~15 MYA) · South America — Argentina (Santa Cruz Formation) Research Note: Kelenken was a terror bird from the Miocene of Argentina — one of the largest known phorusrhacids and an important taxon for understanding the evolution of giant cursorial predators in South America. Research Finding … Read more
In Depth Paleopsilopterus is one of the smallest and by far earliest of the terror birds with fossils dating back as far as sixty million years ago. In a world that had seen the disappearance of the dinosaurs under five million years before its existence, Paleopsilopterus thrived and was likely the form that would go … Read more