†order Exilithecida Sysoyev 1968

Orthothecimorpha - Exilithecida

Parent taxon: Orthothecimorpha according to J. J., Jr. Sepkoski 2002

Sister taxon: Circothecida

Subtaxa: Micatheca Obliquatheca Sokolovitheca

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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

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