Figure 9 in Umbonal musculature and relationships of the Late Triassic filibranch unionoid bivalves

Figure 9. Diagrammatic presentation of variability in disposition of the umbonal musculature in Silesunio parvus gen. et sp. nov. from the early Late Triassic of Krasiejów; camera lucida drawings. Specimens ZPAL AbIII: A, B, 2161–2162; C, D, 2165–2166; E, 2176, F, 2185; G, 2199; H–O, 2199–2205.Published as part of Skawina, Aleksandra & Dzik, Jerzy, 2011, Umbonal musculature and relationships of the Late Triassic filibranch unionoid bivalves, pp. 863-883 in Zoological Journal of the Linnean Society 163 (3) on page 877, DOI: 10.1111/j.1096-3642.2011.00728.x, http://zenodo.org/record/544192