Class Aculifera Blumrich 1891 (mollusk)

Aculifera

Parent taxon: Sachitida according to J. Vinther et al. 2017

Sister taxa: Adversella, Carubacgutes, Halkierioidea, Hippopharangites, Miriella, Quadrochites, Siphogonuchitoidea, Australohalkieria, Ninella, Orthrozanclidae, Wiwaxia

Subtaxa: Halkieriidae

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Ecology: epifaunal grazer

Distribution:

• Cambrian of Australia (46 collections), Canada (12: Newfoundland and Labrador, Nova Scotia), China (58), Greenland (7), Kazakhstan (9), Kyrgyzstan (2), Mongolia (2), the Russian Federation (22), Turkey (1), United States (7: Massachusetts, New York)

Total: 166 collections including 220 occurrences

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