Cephalopoda - Ammonoidea - Protancyloceratidae

Synonym: Pseudoanahamulina Judoley and Furrazola-Bermudez 1968 [objective synonym]

Parent taxon: Protancyloceratidae according to J. Klein et al. 2007

Sister taxa: Cochlocrioceras, Juddiceras, Leptoceras, Parapedioceras, Protancyloceras

Subtaxa: Vinalesites rosariensis

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Type: Hamulina rosariensis

Ecology: fast-moving nektonic carnivore