†order Hypseloconida Peel 1991 (mollusk)

Tergomya - Hypseloconida

Full reference: J. S. Peel. 1991. The Classes Tergomya and Helcionelloida, and early molluscan evolution. Grønlands Geologiske Undersøgelse Bulletin 161:11-65

Parent taxon: Tergomya according to J. S. Peel 1991

See also Feng et al. 2000 and Sepkoski 2002

Sister taxa: Archinacellida, Cyrtonellida, Kiringellida, Scenelloidea, Tryblidiida

Subtaxa: Archaeoconus Hypseloconoidea

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Ecology: epifaunal grazer


• Ordovician of the Czech Republic (1 collection), Norway (1), United States (6: Missouri, Texas, Virginia)

• Cassinian of United States (2: Missouri)

• Marjumian of Greenland (2), United States (1: Vermont)

• Cambrian of Australia (2), United States (16: Minnesota, Missouri, Montana, South Dakota , Wisconsin, Wyoming)

Total: 31 collections including 38 occurrences

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