†order Sulcavitida Qian 1989
Parent taxon: Hyolithomorpha according to P. D. Kruse 2002
Sister taxa: Calcitheca, Dilites, Eumorpholites, Nervolites, Ovalitheca, Parahyolithes, Toxeumorphorida
Subtaxa: Cardiolithidae Dorsojugatidae Gakidae Inflatatheca Inflaticornidae Linevitidae Parakorilithidae Trapezovitidae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cambrian of Australia (28 collections), China (2), the Russian Federation (2)
Total: 32 collections including 54 occurrences