FIGURE 1. Simplified map of Bosnia and Herzegovina showing the fossiliferous locality Tušanj near Tuzla. The colour white represents pre-Cenozoic strata.

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FIGURE 2. Munidopsis salinaria sp. nov., holotype (GBA 1892/005/0001) showing an incomplete isolated dorsal carapace (1) and its schematic reconstruction (2). Scale bar equals 10 mm.

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FIGURE 3. Portunus monspeliensis A. Milne Edwards, 1860, a male individual (PS-8) in dorsal (1) and ventral (2) views. Scale bar equals 10 mm.

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FIGURE 4. Retropluma minuta sp. nov. 1, PS-3 (holotype), male individual. 2, PS-3 (detailed view on chelipeds. 3, PS-7 (paratype), female individual. 4, PS-7, detailed view on rostrum. 5, PS-4 (paratype), male individual. 6, PS-4, detailed view on antennular bases. Scale bars in 1, 3, and 5 equal 5 mm, scale bars in 2, 4, and 6 equal 1 mm. P3-P5 = pereiopods 3-5.

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FIGURE 5. Retropluma minuta sp. nov. (1-4) and Retropluma slovenica Gašparič and Hyžný, 2014 (5, 6). 1, PS-2 (paratype), male individual. 2, PS-6 (paratype), female individual. 3, PS-6, detailed view on male pleon. 4, PS-7, detailed view on female pleon. 5, CNZ-660, male individual. 6, CNZ-275, female individual. Scale bars in 1 and 2 equal 5 mm, scale bars in 3-6 equal 1 mm. P1-P5 = pereiopods 1-5; S2-S6 = pleonal somites 2-6; St5-St7 = thoracic sternites 5-7.

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FIGURE 6. Retropluma minuta sp. nov., schematic reconstruction. 1, Carapace in dorsal view (blank area represents not preserved portion). 2, Male pleon (pleonal somite 1 is not preserved). 3, Left cheliped (P1). 4, Right cheliped (P1). 5, Longest pereiopod (P3). 6, Shortest pereiopod (P5), conjectural.

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FIGURE 7. Graph showing the ratio between the maximum carapace width and carapace length of fossil Retropluma species. The regression line is based on the ordinary least squares linear model.

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