†order Ascocerida Kuhn 1949 (mollusk)

Cephalopoda - Ascocerida

Alternative spelling: Ascoceratida

Parent taxon: Multiceratoidea according to A. Pohle et al. 2022

See also Crick 1981, Frye 1982, Kröger 2013, Mutvei 2013, Sepkoski 2002 and Teichert et al. 1964

Sister taxa: Apocrinoceratidae, Apsidoceratidae, Bassleroceratidae, Clinoceratidae, Cyclostomiceratidae, Cyrtocerinida, Discosorida, Oncocerida, Tarphycerida, Uranoceratidae

Subtaxa: Ascoceratidae Hebetoceratidae Linstroemoceras Probillingsitidae

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Ecology: fast-moving nektobenthic carnivore

Distribution:

• Niagaran of United States (1: Indiana collection)

• Silurian of Sweden (5), the United Kingdom (1), United States (1: Wisconsin)

• Ordovician to Silurian of Canada (3: Québec)

• Ordovician of Canada (24: Manitoba, Northwest Territories, Nunavut, Ontario, Quebec, Québec), Estonia (1), Norway (7), Sweden (3), the United Kingdom (2), United States (43: Colorado, Illinois, Iowa, Wisconsin, Indiana, Indiana, Ohio, Iowa, Iowa, Minnesota, Michigan, Minnesota, New York, Ohio, Tennessee)

• Chazy of United States (3: New York)

Total: 94 collections including 164 occurrences

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