FIGURE 5 in Morphological insights into the lobster genus Uncina Quenstedt, 1851 based on new material from the Ya Ha Tinda Konservat-Lagerstätte, Canada (Early Jurassic)

FIGURE 5. Morphological variation of the chelae of the first pereiopod in the four Uncina species. All sketches are based on real specimens but are shown at approximately the same size to facilitate comparison of morphologies between species (i.e., sketches were either enlarged or reduced proportionally). A) Uncina pacifica, minor claw, specimen TMP 2014.021.0003, B) Uncina ollerenshawi, specimen TMP 2015.051.0063. C) Uncina posidoniae, specimen from the Hauff collection, D) Uncina alpina, redrawn from Schweigert et al. (2003, pl. 10, fig. 4).