The book "Heliocanthus" by Betascript Publishing offers a comprehensive analysis of the eponymous genus of aetosaurs, which has undergone numerous taxonomic revisions in recent years. It examines how Heliocanthus may be identical to Rioarribasuchus. The fossils discussed in this work come from the Chinle Formation in Arizona and New Mexico and date back to the late Carnian phase of the Late Triassic. The name Heliocanthus was originally introduced as a generic replacement for the aetosaur 'Desmatosuchus' chamaensis, which was named in 2003. The book highlights the relationships and evolutionary aspects of this fascinating group of reptiles.