Cephalopoda - Ammonitida - Acanthoceratidae

Alternative spelling: Obiraceras

Parent taxon: Romaniceras according to W. J. Kennedy and W. A. Cobban 1988

See also Barroso-Barcenilla 2007 and Cooper 1978

Sister taxa: Romaniceras (Neomphaloceras), Romaniceras (Romaniceras), Romaniceras (Shuparoceras), Romaniceras (Yubariceras), Romaniceras deverioides, Romaniceras pseudodeverianum, Romaniceras uchauxiense

Subtaxa: none

Ecology: fast-moving nektonic carnivore

Distribution: found only at USGS Mesozoic 15792, Bernabe M. Montano Grant (Cretaceous of New Mexico)

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