ammonites
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Cleviceras Howarth 1992 (ammonite)

Cephalopoda - Ammonitida - Hildoceratidae

PaleoDB taxon number: 68485

Full reference: M. K. Howarth. 1992. The ammonite family Hildoceratidae in the Lower Jurassic of Britain. Monograph of the Palaeontographical Society 1-200

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

Sister taxa: Eleganticeras, Harpoceras, Osperleioceras, Ovaticeras, Polyplectus, Pseudolioceras, Sphenarpites, Taffertia, Tiltoniceras

Subtaxa: none

Type: Ammonites exaratus

Ecology: fast-moving nektonic carnivore