Middle Miocene decapod crustacean assemblage from the Tuzla Basin (Tušanj, Bosnia and Herzegovina), with a description of two new species and comparison with coeval faunas from Slovenia

[摘要] A decapod assemblage consisting of three species is described from the upper Langhian (lower Badenian) of the Tuzla Basin in Bosnia and Herzegovina. The assemblage is dominated by Retropluma minuta sp. nov. (Brachyura, Retroplumidae) and accompanied by Munidopsis salinaria sp. nov. (Anomura, Galatheoidea) and Portunus monspeliensis A. Milne Edwards, 1860 (Brachyura, Portunidae). Based on the calcareous nannoplankton, the studied assemblage is assigned to the upper part of the NN5 Zone. The studied assemblage is considered to have inhabited a shallow, near-shore depositional setting, as suggested by the microfossil association. Munidopsis, Portunus andRetropluma have previously been reported from Slovenia, the area closest to the Tuzla Basin with known decapod fossils. Contrary to shallow-marine settings of the localities studied herein, Munidopsis and Retropluma from Slovenian localities are reported from deeper-marine settings. The occurrence of near-complete individuals of Retropluma minuta sp. nov. suggests a wider bathymetric range of the genus in its evolutionary past than it has today.

[学科分类] 地质学

[关键词] Rok Gašparič;Matúš Hyžný;Gordana Jovanović;Stjepan Ćorić;Sejfudin Vrabac;Malacostraca;fossil;new species;taphonomy;bathymetry;palaeoenvironment