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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.
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Photo from one of Dendy's non-type slides showing polyactine with spined basal cladus and smooth lateral cladi.
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Holotype ZMA Por. 22412 encrusting a stone and SEM images of spicules. A: shape (arrow) encrusting a fragment of sandstone (scale 1 cm), B: long thin style B1 details of apices of long thin style, C: short thin style C1 details of apices of short thin style, D: short thick styles showing size variation, D1 detail of head of short thick style, E: polyactines (three-, four-, five-, and seven-claded) and one amphipolyactine showing size differences, E1 detail of bulbous end of lateral cladus, F: amphipolyactines full-grown and spined (left) next to incipient smooth spicule (right).
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Holotype ZMA Por. 06723 encrusting a stone, and SEM images of the spicules. A: shape (arrow) encrusting a fragment of sandstone (scale 1 cm), B: subtylostyle, B1 details of apices of subtylostyle, C: short thin centrotylote style, C1 details of apices and middle part of short thin centrotylote style, D: polyactines.
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Holotype slide BMNH 1931.1.1.19a and microphotos of skeleton and polyactine. A: slide labeled ‘Cyamon vickersii (Bow.) Ind. Mus. Coll.’ in Burton’s handwriting, B: microphoto of section of skeleton made from the slide, C: characteristic polyactine with recurved hooklike spines on basal cladus and short stubby lateral cladi.
