†Halloceras Hyatt 1884 (mollusk)
Cephalopoda - Nautilida - Rutoceratidae
Parent taxon: Rutoceratidae according to C. Teichert et al. 1964
Sister taxa: Adelphoceras, Anomaloceras, Casteroceras, Centrolitoceras, Diademoceras, Duerleyoceras, Goldringia, Hercoceras, Hindeoceras, Homoadelphoceras, Litogyroceras, Muiroceras, Pleuroncoceras, Ptenoceras, Ptyssoceras, Roussanoffoceras, Rutoceras, Syrreghmatoceras, Tetranodoceras, Threaroceras, Trochoceras, Tylorthoceras
Subtaxa: none
Ecology: nektobenthic carnivore