†order Exilithecida Sysoyev 1968
Orthothecimorpha - Exilithecida
Parent taxon: Orthothecimorpha according to J. J., Jr. Sepkoski 2002
Sister taxon: Circothecida
Subtaxa: Micatheca Obliquatheca Sokolovitheca
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cambrian of Germany (1 collection), Kyrgyzstan (1), the Russian Federation (1)
• Placentian of United States (1: Massachusetts)
Total: 4 collections each including a single occurrence