Sea Urchin Section

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“Diagram of an Echinus (stripped of its spines). a, mouth; a’, gullet; b, teeth; c, lips; d, alveoli; e, falces; f, f, auriculariae; g, retractor, and h, protractor, muscles of Aristotle’s lantern; i, madreporic canal; k, circular ambulacral vessel; l, Polian pedicels; r, r, spines; s, tubercle; s’, tubercle to which a spine is articulated; t, t, pedicellariae; u, anus; v, madreporic tubercle; x, ocular spot.” -Whitney, 1911

Keywords

mouth, gullet, Alveoli, spines, sea urchin section, urchin anatomy, label sea urchin parts, Echinus diagram, Aristotle's lantern

Galleries

Sea Urchins and Sea Stars

Source

William Dwight Whitney The Century Dictionary: An Encyclopedic Lexicon of the English Language (New York, NY: The Century Co., 1911)

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