Phorusrhacos Skull measures 14.1 inches. Phorusrhacos Skull is museum quality polyurethane cast. 2-part skull (separate cranium & jaw).

Phorusrhacos is an extinct genus of giant flightless terror birds that inhabited South America during the Miocene epoch.

Phorusrhacos was one of the dominant land predators in South America at the time it existed. It is thought to have lived in woodlands and grasslands.

Remains are known from several localities in the Santa Cruz Formation and Monte León Formation in Santa Cruz Province, of Argentina.

Among the bones found in the strata of the Santa Cruz Formations (now considered as mainly of mid-Miocene date) was the piece of a mandible which Florentino Ameghino discovered in early 1887 and the same year at first described as that of an edentate mammal which he named Phorusrhacos longissimus.

Phorusrhacos was also known as a terror bird. They were an apex predator in South America during the Miocene period, second only to saber-toothed cats like Smilodon.

The terror birds lived in what is now modern-day Argentina, which was part of Patagonia, the southern area of South America encompassing Argentina and Chile.

Phorusrhacos had a skull nearly 26 in. long, stood nearly 7 ft 10 in. to 8 ft 10 in. tall, and probably weighed nearly 290 lb.

Phorusrhacos is a genus of giant terror birds that lived in South America during the Miocene epoch. The type species of this genus is the Phorusrhacos longissimus.

Phorusrhacos comes from the Greek word phoros meaning “bearer” and rhakos meaning “rag” or “wrinkle,” referring to the bird’s jaw surface being wrinkled. Its name in Latin means “very long,” referring to the lower jaw.

Like the other terror birds from the same period, the Phorusrhacos bird had a large head with a massive beak that was shaped like a hook at the top, similar to modern-day birds of prey such as the eagle.

The lower jaw of this large beak was smaller than the upper jaw. Like present-day ostriches, they could not fly due to its small wing that could not support its weight in the air.

The small wings had sharp claws at the end. This bird probably used it as a weapon in hunting prey and fending off other predators.

Phorusrhacos’s massive body was supported on long skinny legs that allowed them to run at a very high speed.

The skull was nearly 25 inches in length on a very long neck. Their long, skinny legs ended in sharp talons. There were three toes on each foot, and each one had sharp talons that could dig into prey.