**FIGURE 1. 1,** Landmark configuration on schematic osteoderm of * Eutatus*; landmarks (dark gray circles) and semi-landmarks (white circles); **2**, Box-and-whisker plot showing centroid sizes of *E. seguini*, *E. pascuali* and *E. crispianii*.* *The central bar of each box represents the median of the population, while upper and lower bounds are 75th and 25th percentiles, respectively. Boxes show 50 % of the population and whiskers extend showing the minimum and maximum values in a range of 1.5 times the length of the box. Circles mark the atypical values of CS located beyond to 1.5 times the box length distances.

**FIGURE 2.** **1,** Fixed osteoderms of *Eutatus crispianii* sp. nov. MGPV-E1; **2**, *E. seguini* MACN10160a; **3**, *E. seguini* MACN2772; **4**, *E. pascuali* MMP1212. **af**, anterior foramina; **facf**, foramina around the central figure.

**FIGURE 3.** Bivariate plot showing relationship between the width and length of fixed osteoderms of *E. crispianii* sp. nov. (black circles), *E. seguini *(white circles) and* E. pascuali* (red circles).

**FIGURE 4.** Scatterplot (CV1 versus CV2) from Canonical Variate Analysis of osteoderms of *Eutatus*. Shape change across axes is represented as wireframe for the positive and negative values. *95 *%* **confidence ellipse* for *E. seguini*, *E. pascuali *and *E. crispianii* sp. nov. are shown. *E. crispianii* sp. nov. (black circles), *E. seguini *(white circles) and* E. pascuali* (red circles).