leaving deep marks in the earth

suggesting that it was an active hunter in low-light areas

Although they feed calmly

suggesting that the lips may have protected the teeth from wear and tear

with a broad rib cage supported by robust and well-articulated dorsal vertebrae

Brontornis burmeisteri gazella leaving deep marks in theMorphological description and paleoecological considerations of Brontornis burmeisteri (Aves, Phorusrhacidae?) from the Miocene of Argentina Brontornis burmeisteri , one of the most impressive fossil birds in the South American record, is known from remains found in Middle Miocene sediments (approximately 17 to 15 million years ago) in the Santa Cruz Formation, located in Argentine Patagonia. Initially assigned to the family Phorusrhacidae, this taxon