Hall, James, 1811-1898 / Geological survey of Wisconsin, 1859-1863. Palaeontology. Part third
Plate XII, pp. [unnumbered]-Plate XII PDF (819.6 KB)
PLATE XII. HOLOCYST'TES SCUTELLATUS, HALL. Page 357. FIG. 1. Lateral view of the specimen described. The plates on the left side are obscured by adhering rock. HOLOCYSTITES OVATUS, HALL. Page 357. FIG. 2. Lateral view of a specimen of this species. HOLOCYSTITES WINCHELLI, HALL. Page 356. FIG. 3. A view of the specimen described, which is imperfect at the base and summit. HOLOCYSTrMTES CYLNDRICUS, HALL. Page 354. FIG. 4. A view of a well preserved individual of large size, on which the limits of the plates are strongly marked. " 5. View of a smaller individual. " 6. View of a small specimen (preserving a portion of the short column), on which the angular prominences of the plates and the surface pustules are well preserved. HOLOCYSTITES ABNORMIS, HALL. Page 355. FIG. 7. Lateral view of a cast of a large specimen, which preserves the limits of the plates and the minutely pustulose texture of the surface. 8. View of a smaller specimen. The peculiar arrangement of the plates in the lower part of the body is seen in both this and the preceding specimen. HOLOCYSTITES ALTERNATuS, HALL. Page 355. FIG. 9. View of a very distinctly marked specimen of this species, showing the position of the summit aperture and the arrangement of the plates of the body. ECHINvOCYSmnwS XODOSUS, HALL. Page 360. FIGS. 10, 11. Lateral and summit views of the specimen described. APIOCYSTITES IMAGo, HALL. Page 358. FIG. 12. Lateral view of the specimen, showing the structure of the body and the position of the openings. HEMICOSMITES SUB GLOBOSUS, HALL. Page 359. FIG. 13. View of a specimen which shows the structure of the body.