| 41. | Cross-sections of corals and crinoids can be see in the Gold Vein type.
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| 42. | They filtered food particles from the water and are the rarest part of the crinoid.
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| 43. | Crinoids are relatively free from predation.
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| 44. | Crinoids are characterised by a mouth on the top surface that is surrounded by feeding arms.
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| 45. | Inspired, he devoted all his energies to the continued collection and study of crinoid fossils.
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| 46. | The "'Myzostomida "'are an order of small parasitic on crinoids.
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| 47. | It is also possible to see the spot where the stem attached to the crinoid ball.
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| 48. | The marine life of Ohio included crinoids, snails, cephalopods, brachiopods, and fishes.
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| 49. | Crinoids lost all but one family.
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| 50. | The crown has ossicles scattered throughout the connective tissue ( crinoids have no distinct dermis ).
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