size comparison: herrerasaurus - frenguellisaurus

In first plane the small carnivorous primitive dinosaur Herrerasaurus ischigualastensis. Over the cube, the larger herrerasaurid Frenguellisaurus ischigualastensis.
The available materials of Frenguellisaurus ischigualastensis suggest an animal that exceeded 6 meters in length. Thus, the most primitive dinosaurs had reached considerably large sizes.

Herrerasaurus Frenguellisaurus : Cibus

"Cibus" the name of the painting, which in latin means "food", bigger animal on the right is a Frenguellisaurus ischigualastensis (Novas, 1986). On the left, two Herrerasaurus ischigualastensis
(Osvaldo Reig, 1960), both species are argentinian herrerasaurids.