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Rioceras Flower 1964 (nautiloid)

Cephalopoda - Ellesmerocerida - Rioceratidae

Full reference: R. H. Flower. 1964. The Nautiloid Order Ellesmeroceratida (Cephalopoda). State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining and Technology, Memoir 12:234 p.

Parent taxon: Rioceratidae according to B. Kröger and D. H. Evans 2011

Sister taxon: Felinoceras

Subtaxa: Rioceras consuetum, Rioceras dartoni, Rioceras depressum, Rioceras escandei, Rioceras expansum, Rioceras fusiforme, Rioceras lobatum, Rioceras nondescriptum, Rioceras tubulare, Rioceras wellsi

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Type: Rioceras nondescriptum

Ecology: nektobenthic carnivore