The only known specimen, holotype ISI R306 is incomplete and consists of parts of the front ends of the upper and lower jaws, 28 incomplete vertebrae from all parts of the spinal column, most of a femur, and an astragalus (ankle bone).
The partial skull is about 4 centimeters long (1.5 in).
Although material of Alwalkeria is limited, the spacing and shape of the teeth strongly resemble those of Eoraptor.
As in Eoraptor, a gap separates the teeth of the premaxillary and the maxillary bones of the upper jaw.
Other similarities in the skull of the two animals also link them on morphological grounds.
Estimates suggest that Alwalkeria was at best 50 cm (1.6 ft) long.
Gregory S. Paul estimated its weight at 2 kg and length at 1.5 m in 2010.
The only known specimen, holotype ISI R306 is incomplete and consists of parts of the front ends of the upper and lower jaws, 28 incomplete vertebrae from all parts of the spinal column, most of a femur, and an astragalus (ankle bone). The partial skull is about 4 centimeters long (1.5 in). Although material of Alwalkeria is limited, the spacing and shape of the teeth strongly resemble those of Eoraptor. As in Eoraptor, a gap separates the teeth of the premaxillary and the maxillary bones of the upper jaw. Other similarities in the skull of the two animals also link them on morphological grounds. Estimates suggest that Alwalkeria was at best 50 cm (1.6 ft) long. Gregory S. Paul estimated its weight at 2 kg and length at 1.5 m in 2010.
Alwalkeria