Elements of zoölogy a Elements of zoölogy : a textbook elementsofzolo00tenn Year: c1875 CRINOIDEA. 453 arms dividing and subdividing until the branches are said to number more than 80,000 1 FIG. 684. SUB-SECTION VI. THE ORDER OF CRINOIDEA OR CRINOIDS. THE echinoderms of this order are called Crinoids on account of the plant-like or lily-like appearance of many of the species, especially of those found fossil in the rocks. The name Crinoid is from brinon, a lily, and eidos, like. In the Crinoids we see a great development of the aboral region as compared with the oral ; and the for- mer is ge
Elements of zoölogy a Elements of zoölogy : a textbook elementsofzolo00tenn Year: c1875 CRINOIDEA. 453 arms dividing and subdividing until the branches are said to number more than 80,000 1 FIG. 684. SUB-SECTION VI. THE ORDER OF CRINOIDEA OR CRINOIDS. THE echinoderms of this order are called Crinoids on account of the plant-like or lily-like appearance of many of the species, especially of those found fossil in the rocks. The name Crinoid is from brinon, a lily, and eidos, like. In the Crinoids we see a great development of the aboral region as compared with the oral ; and the for- mer is generally calyx-like, and composed of immovable plates, and in many cases the whole supported on a long flexible stem composed of many plates of a beauti- ful structure. Some kinds of Crinoids, as the Rosy Feather-star or Comatula, have a stem in the young state, but at length drop from the stem and spend the remainder of their life as free crinoids. There are but a few living species of Crinoids. But in the rocks, in various parts of the United States and in Crinoid, Pentacrinus caput-medusce. West Indies.
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