Image of horseshoe worms

Description:

Figure 6.Phoronis ijimai. A NSMT-Te 886, transverse section through the posterior part of the body, showing four mesenteries and the position of the giant nerve fibers B NSMT-Te 885, enlargement showing longitudinal muscles of the bushy type C NSMT-Te 885, enlargement of the left giant nerve fiber situated at the base of the left lateral mesentery. Abbreviations: am anal mesentery; i intestine; llm left lateral mesentery; lnf left giant nerve fiber; m longitudinal muscle; om oral mesentery; rlm right lateral mesentery; rnf right giant nerve fiber; s stomach.