Cephalopoda - Ammonitida - Ancyloceratidae

Parent taxon: Tropaeum according to C. W. Wright et al. 1996

Sister taxa: Tropaeum (Epitropaeum), Tropaeum (Tropaeum), Tropaeum antarcticum, Tropaeum arcticum, Tropaeum australe, Tropaeum caseyi, Tropaeum hillsi, Tropaeum imperator, Tropaeum irregulare, Tropaeum jackii, Tropaeum lampros, Tropaeum leptum, Tropaeum percostatum, Tropaeum subarcticum, Tropaeum subsimbirskense, Australiceras (Proaustraliceras), Australiceras mozambiquense, Australiceras argus, Australiceras gracile

Subtaxa: Tropaeum (Ancylotropaeum) baylissi

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Type: Tropaeum (Ancylotropaeum) baylissi

Ecology: fast-moving nektonic carnivore

Distribution: found only at SW Isle of Wight, Upper Crioceras Beds (Cretaceous of the United Kingdom)

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