 Gnathorhizids are found primarily in paleosols representing ephemeral wetlands.Additionally, gnathorhizids, unlike most groups of fossil lungfish, are often found in association with regular burrow structures, suggesting this group of lungfish may have estivated during the dry season, much like modern African and South American lungfish.Unlike most fossil lungfish, but again, like modern South American and African lungfish, gnathorhizids have bladelike toothplates.