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Sea Urchins and Sea Stars |
Record 1 to 25 of 138 |
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A. Rosacea Arm "Diagrammatic vertical section through disc and base of one of the arms of Antedon rosacea. The section is inter-radial on the left, radial on the right. t., Ciliated openings in body wall; h., sub-ep... |
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Actinosphærium "1. The whole animal with c, c, contractile vacuoles 2. Portion of periphery more magnified with a, four still pseudopodia and n, four nuclei or endoplasts. 3. A young actinosphærium."-Whitney, ... |
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Ambulacra "Ambulacra of Star-fish, As seen in a longitudinal and vertical section of one of the rays; and three of them in a separate figure on a larger scale, in which they are shown in different conditions; a... |
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Ambulacral System "Ambulacral system of a starfish. a, ampullae; ap, Polian vesicles; c, circular canal; m, madreporite; m', madreporic canal; p, tube-feet; r, radial vessels; r', branches to ampullae." -Parker, 1900... |
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Ancora "The anchor-shaped calcareous spicules which are attached to and protrude from the flat perforated calcareous plates in the integument of echinoderms of the genus."-Whitney, 1902... |
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Argus, Shetland "The Shetland Argus, Astrophyton scutatum, usually more than a foot across, is sometimes found on the British coast." — Goodrich, 1859... |
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Aserias Aurantiaca "The body of the Asterias is supported by a calcareous envelop composed of juxta-imposed pieces at once various and numerous."... |
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Asterius Rubens "Tergal skeleton of Asterius rubens. a, connecting pieces; b, spinebearing plates." — Encyclopedia Britannica, 1893... |
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Asterius Rubens "Asterias rubens. a, 4-ranked pedicelis; b, end of pedicel magnified." — Encyclopedia Britannica, 1893... |
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Asterius Rubens "Antambulacral surface of Asterias rubens. a, madreporite; a', the same magnified; b, anus." — Encyclopedia Britannica, 1893... |
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Astrogonium Phrygianum "The rays are sometimes very short, or altogether wanting, the body having the form of a pentagonal disk." — Encyclopedia Britannica, 1893... |
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Astropectenn Aurantiacus "Section of ray of Astropecten aurantiacus. a, vertebral ossicles; b, adambulacral ossicles; c, d, marginal ossicles; e, paxillae." — Encyclopedia Britannica, 1893... |
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Basket Star The giant basket star (astrophyton muricatum) is an early Mesozoic invertebrate, often found around British Virgin Islands. During the day, it curls up into a tight ball shape to protect itself from p... |
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Brittle Star A common form of brittle star, dorsal view.... |
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Brittle-star, common Among the several species of Brittle-Star found in the British seas is the Common Brittle-Star, Ophicoma rosula, which displays the most varied hues, arranged in beautiful patterns." — Go... |
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Brittlestar The arms of the brittlestar are more flexible than those of the starfish. They move by lateral movements of the arms, and are much quicker than the typical starfish.... |
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Cidaris coronata "Cidaris coronata–a common Oolitic echinoderm." -Taylor, 1904... |
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Cidaris coronata "Cidaris coronata–a common Oolitic echinoderm…showing the spines attached to tubercles on right hand." -Taylor, 1904... |
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Clypeastrid A family of irregular sea urchins, flattened into a discoidal or shield like shape, with a mouth central and furnished with a masticatory apparatus. ... |
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Common Starfish "Common Starfish (Asterias forbesi)."-Whitney, 1902.... |
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Crinoid Crinoids are Echinoderms. They are distinguished by the fact that they are fixed, during the whole or a portion of the life of the animal, to submarine objects by means of a jointed flexible stalk or... |
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Crinoid Crinoids are Echinoderms. They are distinguished by the fact that they are fixed, during the whole or a portion of the life of the animal, to submarine objects by means of a jointed flexible stalk or... |
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Crinoid The echinoderm, the crinoid or feather-star.... |
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Crinoid A Radiate Echinoderm, a Crinoid, Encrinus liliiformis.... |
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Crinoid A modern crinoid showing steam with root or hold-fast attachment, and a crown composed of the calyx and branching arms.... |
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