The ilium is vertically oriented in Acaenasuchus. The lateral surface of the ilium does not have a second crest above the supra-acetabular crest but does have a tubercle between the supra-acetabular crest and the pre-acetabular process.
The ilium in Acaenasuchus is vertically oriented. The lateral surface does not have an extra crest above the supra-acetabular crest but includes a tubercle between this crest and the pre-acetabular process.