Kank australis: The Smart Heron-Like Raptor from Patagonia That Hunted Fish Before the Asteroid Doom

Paleontologists have unveiled Kank australis, a remarkable new unenlagiid dinosaur from southern Patagonia that hunted fish with heron-like precision rather than the slashing tactics of its northern Velociraptor cousins. Discovered at the La Anita farm near El Calafate in Argentina’s Chorrillo Formation, this 70-million-year-old (Maastrichtian) predator lived in lush freshwater wetlands just before the Chicxulub asteroid impact.

The fragmentary but diagnostic fossils — neck vertebrae, toe bones, and specialized teeth — reveal a 2.5–3-metre-long feathered theropod with a long, flexible neck, elongated snout, and tiny, recurved teeth perfectly suited for grasping slippery prey. Published May 29, 2026, in the Journal of Systematic Palaeontology by Matías Motta, Diego Pol and colleagues, the study shows Kank’s cervical vertebrae allowed rapid, precise strikes akin to modern herons, while ᴀssociated fish remains confirm an aquatic diet.

Named Kank australis (from the Tehuelche word for “southern”), the species bridges a major gap in unenlagiid distribution between northern Patagonia and Antarctica. Its bird-like wing bones and wetland habitat suggest it may have been more agile and intelligent than typical terrestrial raptors, actively stalking or wading for fish rather than ambushing on land.

This discovery highlights the ecological diversity of South American paravians at the end of the Cretaceous and shows that some “raptors” had already evolved sophisticated fishing strategies millions of years before birds dominated the skies. Housed in Argentine collections, Kank proves that Patagonia’s Late Cretaceous ecosystems were thriving with specialised predators right up to the final days of the dinosaur age.