SAGENOCRINIDAE 2CK) 



Temnocrinus tuberculatus (Miller) 

 Plate XVI, figs. 1-15 



Cyathocrinites tuberculatus Miller, Nat. Hist. Crinoidea, 1821, p. 88, fig. 1 (not fig. 2 = Ichthyocrinus). — 

 Goldfuss, Petrefacta Germaniae, 1833, p. 190, pi. 58, fig. 6A. — Phillips in Murchison, Silurian Sys- 

 tem, 1839, p. 671, pi. 18, figs. 6, 7. — Austin and Austin, Mon. Recent and Fossil Crinoidea, 1843-49, 

 p. 66. 



Cyathocrinus tuberculatus, Agassiz, Mem. Soc. Neuchatel, I, 1836, p. 197. — Quenstedt, Handbuch Petre- 

 factenkunde, Ed. 1, 1852, p. 617; 3d Ed., 1885, p. 944, pi. 75, figs. 8-1 1; Petrefaktenkunde Deutsch- 

 lands, IV, 1876, p. 500, pi. 107, fig. 134. — Roemer in Bronn, Lethaea Geognostica, I, 1852-4, p. 236, 

 taf. IV, figs. 160, b. — Murchison, Siluria, 1859, p. 246. 



Isocrinus tuberculatus, Phillips, Palaeozoic Fossils of Cornwall, 1841, p. 30. (Isocrinites) Austin and 

 Austin, Ann. and .Mag. Nat. Hist. (1) X, 1842, p. 108. 



Cladocrinites tuberculatus, Austin and Austin, Ann. and Mag. Nat. Hist., (i)XI, 1843, p. 197. 



Taxocrinus tuberculatus, Phillips in Morris, Cat. British Fossils, Ed. I, 1843, p. 59.; 2d Ed., 1854, P- 90.— 

 M'Coy (Sedgwick & M'Coy) British Palaeozoic Fossils, 1854, p. 53. — Phillips in Murchison, Siluria, 

 1859, pp. xx, 246, 536, pi. 14, figs. 5, 6. — Pictet, Traite Paleontologie, 2d Ed., IV, 1857, p. 327, pi. 101, 

 fig. 10. — Meek and Worthen, Proc. Acad. Nat. Sci. Philadelphia, 1865, p. 141; Geol. Surv. Illinois, 

 II, 1866, p. 270. — Schultze, Mon. Echinodermen Eifler Kalkes, 1867, p. 145, Sep. (1866), p. 33. — 

 Baily, Fig. and Desc. British Pal. Fossils, 1875, pi. 18, fig. 2. — Wachsmuth and Springer, Revision 

 Palaeocrinoidea, pt. 1, 1879, p. 49. — Bather, Ann. and Mag. Nat. Hist. (6) IX, 1892, p. 202. 



Cupulocrinus tuberculatus, D'Orbigny, Prodrome Pal. Stratigraphique, I, 1849, p. 46. 



Dinverocrinites tuberculatus, Pacht, Gattung Dimerocr., 1852, p. 8. 



Temnocrinus tuberculatus, Springer, American Geologist, XXX, 1902, pp. 92-94. — Jour. Geology, XIV, 

 1906, pi. 7, fig. 15. 



Encrimtes armatus, Schlotheim, Nachtrage Petrefaktenkunde, 1823, p. 98, pi. 26, fig. 7a; Merkwurdige 

 Versteinerungen, 1832, p. 25. 



Type of the genus. 



A moderately large species. Crown elongate, widest about IIIBr 3 , where 

 height to width is about i to 1.1 ; spread of calyx, i to 3. Rays and their divi- 

 sions strongly rounded, and iBr areas deeply depressed; sutures more or less 

 sinuous, slightly beveled, and not imbricated. Surface ornamented by small 

 raised tubercles in horizontal rows on radials and lower brachials, tending to 

 become confluent and form parallel vertical ridges on higher brachials, with 

 median longitudinal ridges on interbrachials almost smooth in some specimens. 

 Height of a large crown, 40 mm., width, 20 mm. ; of base, 6.5 mm. 



IBB visible as low pentagons. BB smaller than RR; post. B truncate, fol- 

 lowed by a large anal plate usually angular and supporting a second range of 

 two, succeeded by a diminishing series of 2 to 4 others most numerous at the 

 right side, where they are suturally connected with the ray. RA large, in form of 

 a radial directly under and forming the base of the right posterior ray, connect- 

 ing with radial of next ray to the right. iBr large, elongate, usually with a 

 median longitudinal ridge, and followed by two small plates abreast at the upper 

 corners, sometimes not connecting in the middle ; these as well as the anal plates 

 are directly followed by finely plated perisome, occupying the areas to about the 

 height of the second bifurcation, and passing into the tegmen; a single illBr 

 often present. IIBr 3, exceptionally 2 or 4; IIIBr 4 or 5 inner and 7 to 9 outer, 

 with usually one bifurcation beyond and still another in very mature specimens; 

 lateral margins of brachials rounded, or angular at the edge, often projecting 

 as sharp nodes which sometimes tend to form prominent, wing"-like buttresses 

 along the margin of the rays and their divisions. Arms rounded and deep, the 



