Figure 3 in Ultrastructure of the pseudocnidae of the palaeonemerteans Cephalothrix cf. rufifrons and Carinomella lactea and an assessment of their phylogenetic utility

Figure 3. Transmission electron micrographs of Cephalothrix cf. rufifrons pseudocnidae and pseudocnida-forming cells. (A) Longitudinal section of a mature pseudocnida. Note the filament core (fc) and the lateral process (lp). (B) Cross-section of a pseudocnida. Note the Golgi complex in the cell cytoplasm and the putative pseudocnida precursor material (arrows). (C) RER (re) containing flocculent material in a pseudocnida-forming cell. Abbreviations: co, cortex; fc, filament core; go, Golgi complex; lp, lateral process; me, medulla; re, rough endoplasmic reticulum (RER).