ammonites
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Asthenoceras (ammonite)

Cephalopoda - Ammonitida - Sonniniidae

PaleoDB taxon number: 14588

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

Sister taxa: Fontannesia, Guhsania, Newmarracarroceras, Witchellia

Subtaxa: Asthenoceras nannodes

View classification

Type: Grammoceras nannodes

Ecology: fast-moving nektonic carnivore