ClipArt ETC
"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."…

"End of a branch of red coral of commerce, Corallium rubrum, with three anthozooids, A, B, C, in different degrees of expansion: k, mouth; a, the part of the coenosarc which rises into a cup around the base of each anthozooid."-Whitney, 1902

Anthozooids

"End of a branch of red coral of commerce, Corallium rubrum, with three anthozooids, A, B, C, in different…

"A, portion of a colony of Antipathes dichotoma. B, single zooid and axis of the same magnified. m, mouth; mf, mesenterial filament; ax, axis. C, transverse section through the oral cone of Antipathella minor; st, stomodaeum; ov, ovary." — The Encyclopedia Britannica, 1910

Antipathes Dichotoma

"A, portion of a colony of Antipathes dichotoma. B, single zooid and axis of the same magnified. m,…

A modern Bryozoan, a single branch bearing ovicells and zooid cells.

Bryozoan

A modern Bryozoan, a single branch bearing ovicells and zooid cells.

"Transverse section through a zooid of Cladocora. The corallum shaded with dots, the mesogloca represented by a thick line. Thirty-two septa are present, six in the entocoeles of the primary cycle of mesenteries, I; six in the entocoeles of the secondary cycle of mesenteries, II; four in the entocoeles of the tertiary cycle of mesenteries, II, only four pairs of the latter being developed; and sixteen in the entocoeles between the mesenterial pairs. D, D, Directive mesenteries; st, stomodaeum." — The Encyclopedia Britannica, 1910

Cladocora

"Transverse section through a zooid of Cladocora. The corallum shaded with dots, the mesogloca represented…

"Portion of a colony of Corallium rubrum, showing expanded and contracted zooids. In the lower part of the figure the cortex has been cut away to show the axis, ax, and the longitudinal canals, lc, surrounding it." — The Encyclopedia Britannica, 1910

Corallium Rubrum

"Portion of a colony of Corallium rubrum, showing expanded and contracted zooids. In the lower part…

"Portion of a colony of <em>Corallium rubrum</em>, showing expanded and contracted zooids. In the lower part of the figure the cortex has been cut away to show the axis, ax, and the longitudinal canals, lc, surrounding it." &mdash;Encyclopedia Britannica, 1910

Colony of Collarium Rubrum

"Portion of a colony of Corallium rubrum, showing expanded and contracted zooids. In the lower…

"A, Portion of the surface of a colony of Heliopora coerulea magnified, showing two calices and the surrounding coenenchymal tubes. B, Single zooid with the adjacent soft tissues as seen after removal of the skeleton by decalcification. Z1, the distal, and Z2, the proximal or intracalicular portion of the zooid; ec, ectoderm; ct, coenechymal tubes; sp, superficial network of solenia." &mdash; The Encyclopedia Britannica, 1910

Heliopora Corerulea

"A, Portion of the surface of a colony of Heliopora coerulea magnified, showing two calices and the…

"Diagrammatic sagittal section of Microstomum, showing a chain of four zooids produced by fission. b, brain of the original zooid (the exponents indicating corresponding structures of the more recently formed zooids); c, ciliated pit; d, dissepiments indicating different stages in the separation of the zooids; e, eye-spot; ent, entoderm; g, gut; gl., glandular cells about the mouth; m., mouth of the original worm." -Galloway, 1915

Microstomum

"Diagrammatic sagittal section of Microstomum, showing a chain of four zooids produced by fission. b,…

"A, Schematic longitudinal section through a zooid and bud of Stylophora digitata. In A, B, and C the thick black lines represent coenosarc; col, columella; T, tabulae. B, similar section through a single zoooid and bud of Astroides calicularis. C, similar section through three corallites of Lophohelia prolifera. ez, edge-zone. D, Diagram illustration the process of budding by unequal division. E, section through a dividing calicle of Mussa, showing the union of two septa in the plane of division, and the origin of new septa at right angles to them." &mdash; The Encyclopedia Britannica, 1910

Stylophora Digitata

"A, Schematic longitudinal section through a zooid and bud of Stylophora digitata. In A, B, and C the…

"A, Zoanthid colony, showing the expanded zooids. B, Diagram showing the arrangement of mesenteries in a young Zoanthid. C, Diagram showing the arrangement of mesenteries in an adult Zoanthid. 1, 2, 3, 4, Edwardsian mesenteries." &mdash; The Encyclopedia Britannica, 1910

Zoanthid Colony

"A, Zoanthid colony, showing the expanded zooids. B, Diagram showing the arrangement of mesenteries…

"Single zooid with the adjacent soft tissues as seen after removal of the exoskeleton by decalcification. Z1, the distal, and Z2, the proximal of intracalicular portion of the zooid; ec, ectoderm; ct, coenenchymal tubes; sp, superficial network of solenia." &mdash;Encyclopedia Britannica, 1910

Zooid

"Single zooid with the adjacent soft tissues as seen after removal of the exoskeleton by decalcification.…

"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." &mdash;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." &mdash;Encyclopedia Britannica, 1910

Alcyonarian Zooid

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

"Diagrammtic longitudinal section of an Anthozoan zooid. m, Mesentery; t, Tentacles; st, Stomodaeum; sc, Sulcus; r, Rotteken's muscle; s, stoma; lm, Longitudinal muscle; d, diagonal muscle; go, gonads." &mdash;Encyclopedia Britannica, 1910

Anthozoan Zooid

"Diagrammtic longitudinal section of an Anthozoan zooid. m, Mesentery; t, Tentacles; st, Stomodaeum;…