FIG. 14. — A-C in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera

FIG. 14. — A-C, Arthroclema sp. A: A, branch oblique thin section,CEGH-UNC 27530 e; B, C, tangential thin section showing autozooecial apertures and paurostyles, CEGH-UNC 27529 b; D-H, Trigonodictya elegans (Ulrich, 1893): D, E, tangential thin section showing autozooecial apertures, CEGH-UNC 27530 c; F-H, branch transverse thin section showing autozooecial chambers and mesotheca with rods, CEGH-UNC 27542 b. Scale bars: A, B, E, G, 0.5 mm; C, H, 0.2 mm; D, F, 1 mm.