Plate 3. Scale bar for figs. 1-13 = 100 µm. Codes after sample description are slide description and England Finder coordinates, respectively. Distinctive external morphologies or features allow for identification of taxa despite various preservation problems. 1, 2. Bekoma campechensis. (1) Clay-filled and slightly corroded specimen. Note corrosion on left appendage. (2) In this assemblage most specimens belonging to the genus Bekoma are represented only by the characteristic cephalic structure. Sample 165-1001A-35R-1, 145-147 cm, sl.4 R41/4, G27/0.