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"Portion of the corallum of Astylus subvividis (one of the Stylasteridae), showing cyclosystems placed at intervals on the branches, each with a central gastropore and zone of slit-like dactylopores." — Encyclopedia Britannica, 1893

Astylus Subvividis

"Portion of the corallum of Astylus subvividis (one of the Stylasteridae), showing cyclosystems placed…

"Diagrams illustrating the successive stages in the development of the cyclosystems of the Stylasteridae. 1, Sporadopora dichotoma. 2, 3, Allopora nobilis. 4, Allopora profunda. 5, Allopora miniacea. 6, Astylus subviridis. 7, Distichopora coccinea. s, style; dp, dactylopore; gp, gastropore; b, in 6, inner horseshoe-shaped mouth of gastropore." — Encyclopedia Britannica, 1893

Stylasteridae

"Diagrams illustrating the successive stages in the development of the cyclosystems of the Stylasteridae.…