A new member of the Family Prosopidae (Crustacea: Decapoda: Brachyura) from the Lower Cretaceous of Japan

  • Hiroaki Karasawa Mizunami Fossil Museum, Yamanouchi, Akeyo, Mizunami, Gifu 509-6132, Japan.
  • Hisayoshi Kato Natural History Museum and Institute, Chiba, Aoba, Chiba 260-8682, Japan.
  • Kazunobu Terabe Department of Geology, Faculty of Science, Niigata University, Niigata 950-2181, Japan.
Keywords: Crustacea, Decapoda, Brachyura, Prosopidae, Cretaceous, Japan.


A new genus and species (Decapoda: Brachyura: Prosopidae) is described from the lower Cretaceous Sebayashi Formation of Gunma Prefecture, Japan. It represents the second and oldest record of the Family Prosopidae from the North Pacific realm. A checklist of all known species of the Mesozoic Decapoda from Japan is included.

SPECIAL SECTION, Systematics and paleobiology of fossil Crustacea