Cephalopoda - Ammonitida - Hildoceratidae

Synonyms: Canavarina Buckman 1904, Cotteswoldia, Nadorites Elmi and Caloo-Fortier 1985, Walkericeras Buckman 1913

Parent taxon: Grammoceratinae according to M. K. Howarth 2013

Sister taxa: Catulloceras, Dumortieria, Grammoceras, Hudlestonia, Phlyseogrammoceras, Podagrosites, Pseudogrammoceras, Pseudolillia, Shakraceras, Troitsaia, Yakounia

Subtaxa: Cotteswoldia subcompta

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Ecology: fast-moving nektonic carnivore