FIGURE 17.

Dissected myosepta of Polymetme sp. (MNHN 1997 830, 160 mm SL) photographed under polarized light. (a) Myoseptum of V6 at 0,25L. ECT and ENTB present. Dense connective tissue in insertion area of RM. (b) Myoseptum of V15 at 0,43L. ECT, ENTB and EPTB present. (c) Myoseptum of V17 at 0,46L. Anterior cones present. (d) Myoseptum of V23 at 0,59L. LTs, ENTB and EPTB present. LTs extending from anterior into posterior cones. (e) Myoseptum of V30 at 0,73L. LTs, ENT and EPT present. (f) Myoseptum of V35 at 0,83L. Elongated LTs present. Abbreviations: DAC, dorsal anterior cone; DPC, dorsal posterior cone; ECT, epicentral tendon; ENT, epineural tendon; ENTB, epineural tendon bone; EPT, epipleural tendon; EPTB, epipleural tendon bone; F.NL, foramen for the nervus lateralis; HM, horizontal midline; LT, lateral tendon; MT, myorhabdoid tendon; RMA, attachment site of red musculature; RMTs, tendons within red muscle bundles; VAC, ventral anterior cone; VPC, ventral posterior cone