According to Brochu (2013), material from the middle Eocene of Italy and Texas may represent another yet unnamed species. The two Asian species of Planocrania were found to be most closely related to Boverisuchus using a phylogenetic analysis.
Brochu (2013) suggests that material from the middle Eocene in Italy and Texas may be indicative of another, yet-to-be-named species. Phylogenetic analysis indicates that the Asian species of Planocrania are closely related to Boverisuchus.