Fig. 3 in The Aperture and Its Closure in an Ordovician Conulariid

Fig. 3. Types of closures in conulariid scyphozoans. A. Plicated type closure in Metaconularia? anomala (Barrande, 1867) from the Drabov quartzites of Bohemia, NM−PM2−L25097. B. Triangular lappet type of closure in Metaconularia aspersa (Lindström, 1884) from the Lower Ludlow of Church Hill, Herefordshire, England, NHM−L−G5373. C. Lobate lappet type of closure in Paraconularia quadrisulcata (Sowerby, 1821) from the Carboniferous of Carluke, Lanarkshire, Scotland, NHM−L 46784. All are accompanied by sketches (based on Moore and Harrington 1956) showing different stages in the closure.