A new pinnotherid crab (Decapoda: Brachyura: Pinnotheridae) from the Miocene Niijukutoge Formation, northeast Japan

Abstract

A new fossil pinnotherid crab, Globihexapus kosekii sp. nov. is described from the early to middle Miocene Niijukutoge Formation in Shichikashuku-machi, Miyagi Prefecture, northeast Japan. Based on the presence of five pairs of pereiopods as revealed in an examination of the present material and reexamination of the types of Globihexapus Schweitzer and Feldmann, 2001, this genus is transferred from the family Hexapodidae Miers, 1886 to the subfamily Asthenognathinae Stimpson, 1858 of the family Pinnotheridae de Haan, 1833.