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FIGURE 1. Morphological parts of a tentaculitoid shell (adapted from Larsson, 1979).

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FIGURE 2. Geological map of the analyzed area, showing the region where specimens were collected in 1, and the geological formations of the region in 2 (adapted from Bosetti et al., 2010).

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FIGURE 3. Tentaculites paranaensis. 3.1 paratype, 3.2 holotype (NR 4784, GP/1E 3242, respectively), 3.3 shows apical region slightly curved (NR 7137), 3.5 groupings of T. paranaensis (Unirio 89 ten), 3.8 (NR 5466), 3.9 shows the thin and inexpressive rings (NR 6515). Tentaculites kozlowskii. 3.4, 3.6 paratype, 3.7 holotype (MN 7030, MPI 9832, MPI 9837, respectively). Scale 0.5 cm.

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FIGURE 4. Homoctenus katzerii. 4.1 holotype, 4.2, 4.3 (MPI 907, CCLP 21, GP/ 1E 3637, respectively). Uniconus ciguelii. 4.4 holotype, 4.7, 4.8 (CCLP 22, CCLP 39, MPI 10152, respectively). Styliolina langenii. 4.5 holotype, 4.6, 4.9 (MPI 10152, DGM 1703, MN 7030).

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FIGURE 5. Biostratigraphic distribution of the new species of tentaculitoids in Devonian strata of the ParanĂ¡ Basin.