Miocene and Pleistocene crabs (Crustacea, Decapoda) from Sabah and Sarawak

Abstract

Synopsis New species of fossil crabs are described and figured from the Miocene and Pleistocene of Sabah and Sarawak. The following three genera and 20 species are new: ? Paguridae gen. et sp. nov., Raninoides morrisi, Sabahranina trushidupensis (gen. nov.), Mursia bakenuensis, Gomezinus tuberculatus (gen. nov.), Saratunus longiorbis (gen. nov.), Lupocyclus karasawai, Galene litoralis, Xanthias miocenicus, Pilumnus fookimensis, Hyastenus sp., Parthenope clypeformis, Parthenope jugula, Nucia platyspinosa, Leucosia calcarata, Pariphiculus decemtuberculatus, Pariphiculus multituberculatus, Philyra trusanensis, Bicarinocarcinus tumidus, Pinnixa microgran‐nulosa, Retropluma laurentae. Emended descriptions and/or stratigraphical and/or geographical ranges are given for the following 18 species: Thalassina anomala (Herbst), Charybdis (C.) sp., cf. Charybdis (C.) annulata (Fabricius), Heikea tuberculatum nov. com. (Morris & Collins), Podophthalmus vigil (Fabricius), Podophthalmus fusiformis Morris & Collins, Portunus obval‐latus Morris & Collins, Portunus woodwardi Morris & Collins, Cyclodius ungulatus (A. Milne Edwards), Carcinoplax sp. aff. Carcinoplax prisca Imaizumi, Hexapus decapodus (Morris & Collins), Pisoides sp., cf. Pisoides bidentatus (A. Milne Edwards), Nucilobus symmetricus Morris & Collins, Leucosia tutongensis Morris & Collins, Iphiculus sexspinosus Morris & Collins, Myra subcarinata Morris & Collins, Orthakrolophus bittneri (Morris & Collins), Macrophthalmus wilfordi Morris & Collins and Pinnixa aequipunctata Morris & Collins. As well as allowing description of new species, the material in the present collections contains species hitherto absent from the fossil record of Borneo sensu lato; the stratigraphical ranges of other species is extended.