Cyamon neon De Laubenfels, 1930

Description:

Holotype USNM 21412, A: massively encrusting shape with irregular surface (scale = 1 cm), B: long thin style, B1 detail of rounded end showing subterminal tyle, C: short thin centrotylote (strongylo-)style C1 detail of swollen roughened apex of short thin (strongylo-)style, D: short thick style, E: polyactines, E1 detail of basal cladus of polyactine, F diactinal polyactine.