"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.…