A new decapod crustacean faunule is described from the early Miocene of the Slovenian part of the Styrian Basin. The Ivnik Beds exposed at the Činžat locality contain seven species: Calliax michelottii (Axiidea: Callianassidae), Lepidophthalmus paratethyensis sp. nov. (Axiidea: Callianassidae), Jaxea kuemeli (Gebiidea: Laomediidae), Styrioplax exiguus (Brachyura: Chasmocarcinidae), Goneplax gulderi (Brachyura: Goneplacidae), Neopilumnoplax pohorjensis sp. nov. (Brachyura: Mathildellidae) and Retropluma slovenica sp. nov. (Brachyura: Retroplumidae). Numerous specimens of well‐preserved Styrioplax exiguus permitted its redescription and re‐assignment of its familial placement to Chasmocarcinidae. Neopilumnoplax pohorjensis sp. nov. constitutes the first fossil occurrence of the genus known to date. The decapod association, as well as other faunal elements, suggests low‐energy deep‐water depositional environment with epibathyal water depth of more than 125 m. The studied locality is situated in the Ribnica–Selnica graben filled with sediments once deposited in the Central Paratethys sea. Based on the affinities of decapod genera of the Central Paratethys and the Proto‐Mediterranean, we conclude that the exchange of decapod faunas between these regions was probably regulated by an anti‐estuarine circulation permitting an easier incursion of species from the Proto‐Mediterranean into the Paratethys and simultaneous hindering the Paratethyan endemics (Styrioplax) from entering the Mediterranean.

中文翻译：

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来自施蒂里亚盆地斯洛文尼亚部分的早中新世深水甲壳类动物，及其古环境和古生物地理意义。

从施蒂里亚盆地斯洛文尼亚部分的早中新世描述了一种新的十足目甲壳动物牧群。Činžat 地区暴露的 Ivnik Beds 包含七个物种：Calliax michelottii (Axiidea: Callianassidae)、Lepidophthalmus paratethyensis sp。十一月 (Axiidea: Callianassidae), Jaxea kuemeli (Gebiidea: Laomediidae), Styrioplax exiguus (Brachyura: Chasmocarcinidae), Goneplax gulderi (Brachyura: Goneplacidae), Neopilumnoplax pohorjensis sp. 十一月 (Brachyura: Mathildellidae) 和Retropluma slovenica sp。十一月 （Brachyura：Retroplumidae）。大量保存完好的Styrioplax exigus标本允许其重新描述并将其家族位置重新分配给Chasmocarcinidae。波霍金新毛茛sp。十一月 构成了迄今为止已知的该属的第一个化石。十足类组合以及其他动物群元素表明，深水深度超过 125 m 的低能深水沉积环境。研究地点位于 Ribnica-Selnica 地堑中，该地堑充满了曾经沉积在中央帕拉提斯海中的沉积物。基于中部Paratethys和原地中海的十足目动物属的亲缘关系，我们得出结论，这些地区之间的十足目动物群的交换可能受到反河口环流的调节，允许物种更容易从原地中海进入地中海。 Paratethys 并同时阻碍了 Paratethys 地方病 ( Styrioplax ) 进入地中海。