Hall, James, 1811-1898 / Geological survey of Wisconsin, 1859-1863. Palaeontology. Part third
Plate XI, pp. [unnumbered]-Plate XI PDF (748.1 KB)
PLATE XI-Continued. ICH'TJHYOCRINUS SUBANGULARIS, HALL. Page M87. FIG. 15. Lateral view of a specimen from Bridgeport, Illinois, preserving the substance of the plates. " 16 View of a specimen from Waldron, Indiana, from which the species was originally de- scribed. CAR YOCRINUS ORNAATUS, SAY. FIG. 17. Lateral view of an internal cast of a specimen of this species, possessing the usual characters of the species as they occur at these localities. CR YPTODISCUS. FIG. 18. The calyx of a CRINOIDEAN ? of a new and peculiar type, for which the name CRYPTO- DISCUS is suggested.