| morphological_description: | Ohiocrinus with isotomous arm branching with four to fourteen primibrachials, loosely and clockwise coiled anal sac composed of cylindrical plates and covered with small polygonal plates, relatively short xenomorphic column, and small lichenocrinid-type holdfast | → | <i>Ohiocrinus</i> with isotomous arm branching with four to fourteen primibrachials, loosely and clockwise coiled anal sac composed of cylindrical plates and covered with small polygonal plates, relatively short xenomorphic column, and small lichenocrinid-type holdfast |
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