[2] In the Late Triassic, the ecological niche left by Erythrosuchus was filled by archosaurs including Saurosuchus and Postosuchus.

[3][4] It walked on all fours and had limbs positioned semivertically under its body, unlike the more sprawling gait of most earlier reptiles.

[8] This skull, known as BPI 5207 and currently part of the collection of the Bernard Price Institute for Palaeontological Research in South Africa, has a somewhat pointed snout.

[5] Supposed Erythrosuchus fossils reported from the Omingonde Formation of Namibia were later described as Etjosuchus, a "rauisuchian" (loricatan) archosaur.

For example, the inner part of the otic capsule (the skeletal structure surrounding the inner ear) is not entirely ossified, or completely formed of bone.

[10] Some features of the ankle of Erythrosuchus suggest that it was beginning to adapt toward walking on toes rather than having the entire foot placed on the ground.