Figure 18 in Morphological perspective on the classification and evolution of Recent Pterioidea (Mollusca: Bivalvia)

Figure 18. Pedo-byssal musculature in the Pterioidea. Diagrammatic lateral view. A, Malleus, some Pteria; B, Isognomon; C, most Pterioidea. Abbreviations: am, accessory pedo-byssal muscle; arm-1, anterior pair of anterior pedo-byssal retractor muscles; arm-2, posterior pair of anterior pedo-byssal retractor muscles; by, byssus; f, foot; farm, fused anterior pedo-byssal retractor muscles (arm-1/arm-2); pam, posterior adductor muscle; prm, posterior pedo-byssal retractor muscle.Published as part of Tëmkin, Ilya, 2006, Morphological perspective on the classification and evolution of Recent Pterioidea (Mollusca: Bivalvia), pp. 253-312 in Zoological Journal of the Linnean Society 148 (3) on page 299, DOI: 10.1111/j.1096-3642.2006.00257.x, http://zenodo.org/record/542775