Polyps and sclerites of Calyptrophora reedi from the holotype, USNM 1409027. a lateral stereo view of two whorls b adaxial stereo view of a polyp c buccal stereo view of a polyp d stereo view of inner face of a basal scale e basal scale f ridged inner spine of basal scale g articulating ridge and spines of a basal scale h buccal scales i abaxial fusion of buccal scales j six opercular scales k two infrabasal scales l two coenenchymal scales.