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Sonninia (Euhoploceras) (ammonite)

Cephalopoda - Ammonitida - Sonniniidae

PaleoDB taxon number: 257986

Alternative spelling: Euhoploceras

Synonyms: Sherbornites Buckman 1923 (no. 257988), Stiphromorphites Buckman 1923 (no. 257987)

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

Sister taxa: Sonninia (Alaskinia), Sonninia (Papilliceras), Sonninia (Sonninia)

Subtaxa: Sonninia (Euhoploceras) bifurcata, Sonninia (Euhoploceras) playfordi

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Ecology: fast-moving nektonic carnivore