†Hyphantoceras (Madagascarites) Collignon 1966
Cephalopoda - Ammonitida - Nostoceratidae
Alternative spelling: Madagascarites
Parent taxon: Hyphantoceras according to H. C. Klinger 1985
See also Sepkoski 2002, Summesberger 1979 and Summesberger 1980
Sister taxa: Hyphantoceras (Hyphantoceras), Hyphantoceras ceratopse, Hyphantoceras irregulare, Hyphantoceras oshimai, Hyphantoceras plicatum, Hyphantoceras venustum
Subtaxa: none
Distribution:
• Cretaceous of Japan (4 collections)
Total: 4 collections each including a single occurrence