Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 Cyathocrinites planus. Miller. Body and arms. Mountain Limestone. Cyathocrinus caryocrinoides, M'Coy. a. Surface of one of the joints of the stem. b. Pelvis or body; called also calyx or cup. c. One of the pelvic plates. In the greater part of them, the cup or pelvis, fig. 568 b, is greatly developed in size in proportion to the arms, although this is not the case in fig. 567. The genera Poteriocrinus, Cyathocrinus,
Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 Cyathocrinites planus. Miller. Body and arms. Mountain Limestone. Cyathocrinus caryocrinoides, M'Coy. a. Surface of one of the joints of the stem. b. Pelvis or body; called also calyx or cup. c. One of the pelvic plates. In the greater part of them, the cup or pelvis, fig. 568 b, is greatly developed in size in proportion to the arms, although this is not the case in fig. 567. The genera Poteriocrinus, Cyathocrinus, Pentremites, Antinocrinus, and Platycrinus are all of them characteristic of this formation. Other Echinoderms are rare, a few Sea-TJrchins only being known: these have a complex structure, with many more plates on their surface than are seen in the modern genera of the same group. One genus, the Palcechinus (fig. 569), is the analogue of the modern Fier. 569. Fig. 570.
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