"An expanded Alcyonarian zooid, showing the mouth surrounded by eight pinnate tentacles. st, Stomodaeum in the center of the transparent body; m, messenteries; asm, asulcar mesenteries; B, spicules, enlarged." — The Encyclopedia Britannica, 1910

Alcyonarian

"An expanded Alcyonarian zooid, showing the mouth surrounded by eight pinnate tentacles. st, Stomodaeum…

"Transverse section of an Alcyonarian zooid. mm, Mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum." — The Encyclopedia Britannica, 1910

Alcyonarian

"Transverse section of an Alcyonarian zooid. mm, Mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum."…

"An expanded Alcyonarian Zooid, showing the mouth surrounded by eight pinnate tentacles. st, Stomodaeum in the center of the transparent body; m, mesenteries; asm, asulcar mesenteries; B, picules, enlarged." —Encyclopedia Britannica, 1910

Alcyonarian zooid

"An expanded Alcyonarian Zooid, showing the mouth surrounded by eight pinnate tentacles. st, Stomodaeum…

"Transverse section of an Alcyonarian zooid. mm, mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum." —Encyclopedia Britannica, 1910

Alcyonarian Zooid

"Transverse section of an Alcyonarian zooid. mm, mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum."…