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Hall, James; 1811-1898 / Geological survey of Wisconsin, 1859-1863. Palaeontology. Part third
(1871)
Plate XI, pp. [unnumbered]-Plate XI
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PLATE XI. EUCALYPTOCRINUS OBCONICUS, HALL. Page 365. FIG. 1. Lateral view of a specimen of this species, showing the structure of the body and first bifurcation of the rays. EUCALYPTOCRINUS CRASSUS, HALL. Page 365. FIG. 2. Lateral view of a well preserved cast of this species, which shows the structure of the body in a very satisfactory manner. " 3. Basal view of the same specimen as fig. 2. EUCALYPTOCRIINUS ORNATUS, HALL. Page 366. FIG. 4. Basal view of the calyx of a specimen of this species. The figure is from a gutta-percha impression taken in the natural mould of the exterior, and shows the surface mark- ings of the plates. " 5. View of an internal cast of this species, of large size, which preserves the impressions of the lines of growth of the plates. EUCALYPTOOCRINUS COIUNUTUS, VAR. EXCAAV.A TUS, HALL. Page 364. FIG. 6. Basal view of an internal cast of this species, showing the deeply excavated base. c 7. Lateral view of the same specimen as fig. 6. EUCALYYPT-OC'RIN US CORNIUTu S, HALL. Page 363. FIG. 8. Shows the cavity left in the rock by the solution of the substance of the crinoid. The inside of the cavity is occupied by the cast of the interior of the cup of the specimen. FIGS. 9, 10. Basal and lateral views of a gutta- percha cast made in the natural mould left by the removal of the substance of the crinoid. CYAiTHOcCRLVUS ivAUKoIA, HALL. Page 367. FIGS. 11, 12. Lateral and basal views of an internal cast of this species. a C'YATHOCRINUS CORA, HALL. I Page 366. FIG. 13. View of the anal side of a specimen of this species, showing the position of the anal plate. 14. Lateral view of a larger individual of the species, showing more distinctly the radiating lines of the plates. (Some larger specimens observed are very decidedly constricted above the base.)
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