†family Ammagnostidae Opik 1967 (artiopod)

Artiopoda - Agnostida - Ammagnostidae

Alternative spelling: Ammagnostinae

Parent taxon: Condylopygoidea according to E. B. Naimark and T. V. Pegel 2017

See also Hong et al. 2003 and Jago et al. 2004

Sister taxa: Agnostidae, Clavagnostidae, Condylopygidae, Diplagnostidae, Doryagnostidae, Glaberagnostus, Glyptagnostus, Leiagnostus, Megagnostus, Metagnostidae, Phalacromidae, Phalagnostus, Phaldagnostus, Pseudagnostidae, Ptychagnostidae, Spinagnostidae, Valenagnostus

Subtaxa: Ammagnostus Proagnostus

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Type: Ammagnostus

Ecology: slow-moving epifaunal detritivore

Distribution:

• Ayusokkanian of Kazakhstan (14 collections)

• Marjumian of Greenland (6), United States (2: Alabama, Utah)

• Cambrian of Australia (4), Canada (1: Yukon), China (67), France (1), Greenland (2), India (2), Kazakhstan (11), North Korea (1), the Russian Federation (4), South Korea (5), United States (5: Utah, Wisconsin, Wyoming)

Total: 125 collections including 187 occurrences

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