Aiba, D., in press: two species of Hyphantoceras

[mhorn]

Aiba, D., in press: A possible phylogenetic relationship of two species of Hyphantoceras (Ammonoidea: Nostoceratidae) in the Cretaceous Yezo Group, northern Japan // Paleontological Research. doi:10.2517/2018PR010.

PDF http://www.palaeo-soc-japan.jp/publicat ... 8PR010.pdf