Procompsognathus may have been about 1 metre (3.3 ft) long, though Fraas in 1913 estimated a length of 75 cm (2.5 ft).
In 2010 Gregory S. Paul gave an estimate of 1 kilogram (2.2 lb) for the weight with a length of 1.1 metres (3.6 ft).
A biped, Procompsognathus had long hind legs, short arms, large clawed hands, a long slender snout with many small teeth, and a stiff tail.
 The femur discovered for the type specimen of this genus measures 93mm and the tibia, 112mm.
The tibia is approximately 20% longer than the femur in Procompsognathus, an adaptation which has been strongly correlated with the development of cursorial habits in dinosaurs, suggesting that they were good runners.
Procompsognathus may have been about 1 metre (3.3 ft) long, though Fraas in 1913 estimated a length of 75 cm (2.5 ft). In 2010 Gregory S. Paul gave an estimate of 1 kilogram (2.2 lb) for the weight with a length of 1.1 metres (3.6 ft). A biped, Procompsognathus had long hind legs, short arms, large clawed hands, a long slender snout with many small teeth, and a stiff tail.  The femur discovered for the type specimen of this genus measures 93mm and the tibia, 112mm. The tibia is approximately 20% longer than the femur in Procompsognathus, an adaptation which has been strongly correlated with the development of cursorial habits in dinosaurs, suggesting that they were good runners.
Procompsognathus