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Kelenken is a genus of phorusrhacid ... The long and slender tarsometatarsus of Kelenken instead shows that this bird may have been much swifter than the smaller, ...
Kelenken guillermoi, from the Langhian stage of the Miocene epoch, some 15 million years ago, discovered in the Collón Curá Formation in Patagonia in 2006, represents the largest bird skull yet found. The fossil has been described as being a 71-centimetre (28 in), nearly intact skull.
In spite of this, it would still make Titanis one of the largest phorusrhacids and birds known, only relatives like Devincenzia and Kelenken as well as some struthioniforms and gastornithiforms being larger. [9] [26] [2] [35]
The discovery of Kelenken clarified the anatomy of large phorusrhacids: flightless birds with long hind limbs, small wings, huge skulls and hooked beaks. At 716 mm (28.2 in) long, the skull of Kelenken is the largest known of any bird. Kelenken is thought to have been about 3 m (10 ft) tall and exceeded 100 kg (220 lb) in weight. It differs ...
The discovery of Kelenken clarified the anatomy of large phorusrhacids: flightless birds with long hind limbs, small wings, huge skulls and hooked beaks. At 716 mm (28.2 in) long, the skull of Kelenken is the largest known of any bird. Kelenken is thought to have been about 3 m (10 ft) tall and exceeded 100 kg (220 lb) in weight. It differs ...
Phorusrhacos was part of the group called the Phorusrhacidae, which is an extinct group of flightless, cursorial carnivorous birds that occupied one of the dominant, large land-predator niches in South America from the lower Eocene to the Pleistocene. They dispersed into North America during the Great American Biotic Interchange (~3 Ma).
Cariamiformes (or Cariamae) is an order of primarily flightless birds that has existed for over 50 million years. The group includes the family Cariamidae (seriemas) and the extinct families such as Phorusrhacidae, Bathornithidae, Idiornithidae and Ameghinornithidae.
Size comparison of Brontornis (red), Kelenken (yellow) and a human. Due to the size of the finds, a height of 280 centimetres (9.2 ft) is assumed. The pronounced massiveness of the bones leads to weight estimates between 350 and 400 kilograms (770 and 880 lb) [1] or 319 to 350 kilograms (703 to 772 lb), [17] [13] however, some finds have clear size differences that can reach up to 33% based on ...