Hall, James, 1811-1898 / Geological survey of Wisconsin, 1859-1863. Palaeontology. Part third
Plate X, pp. [unnumbered]-Plate X PDF (641.0 KB)
PLA TE X. A C(TNOC!RINUS (SA CCO('RINUS) SPJfIRA DfA 7S. HAL 1,. Page .370. FIG. 1. In internal cast of a specimen of this species, showing the characters as described. UNSHOD OCRINUS ? R Ec(i'S, HAL!L. Page 36a. FIG. 2. View of an interior cast, presenting one of the interradial areas, and two of the radial series. OL 1YPTASTER OCCIDENTArIS, H.IILL. Page 369. FIG. 3. Lateral view of a well preserved cast of this species. G L YPTA STER PENTA NGVLA M: iRIS, 1~ 1A,1. Page 369. FIG. 4. An internal cast of this species, preserving the impressions of the plates. MEL OCR0RINUS I- El? NE TILr, TimoOSI. Page 372. FIG. 5. An internal cast of this species. The constriction between the arms is not quite so deep as in some examples. LiAMPTEROCRLNv S IYrLAT'PUS, IL-L L. Page 374. FIG. 6. Lateral view of a well preserved cast of this species, which preserves the markings of the plates in an unusual degree. MA C(ROSTYL OC'RINUS S'TIRA T'US, /ILA r.. Page 371. FIG. 7. External characters of this species, taken from a gutta-percha cast in the natural mould. 8. The internal cast of the same individual. GLYPTO( 'RINUS NOBILIS, H[ALL. Page 372. FIG. 9. A view of the external surface as obtained from an impression in the natural mould. " 10. Lateral view of an internal cast of this species. The base has been broken off. (GLY ITOCRINUS ARMOSUS, M '( ,HESNEY. Page 373. FIG. 11. Lateral view of an unusually well preserved internal cast, on which the boundaries of the plates are well marked. The similarity in general form between this species and G. Inobilis is very remarkable, the conspicuous difference in the cast being the strong elevated proboscis in the latter; while in the former the organ occupying this position curves backwards, lying clo~se upon the summit, and is directed downwards to the line of the arm-bases.