FIGURE 4 in Rediscovery and redescription of Cassidulus infidus (Echinoidea: Cassidulidae) from Northeastern Brazil

FIGURE 4. Drawings of Cassidulus infidus UFBA-314 showing: (A) floscele with peristome aperture in light solid gray, bourrelets shaded, naked zone pits in dark solid gray, sphaeridial pits in solid black, phyllopores and primary tubercles represented by small open circles and three concentric circles, respectively, and (B) basicoronal plates around peristome aperture in light gray, from specimen 12.86 mm long; (C) internal oral surface of phyllode IV (phyllopores in solid black) from specimen 9.46 mm long; and (D) SEM of sphaeridium from pit in interambulacrum 5. Scale bars for A-C are 1 mm and for D is 10 µm long.Published as part of Souto, Camilla, Manso, Cynthia L. C. & Martins, Luciana, 2011, Rediscovery and redescription of Cassidulus infidus (Echinoidea: Cassidulidae) from Northeastern Brazil, pp. 39-48 in Zootaxa 3095 on page 44, DOI: 10.5281/zenodo.27909