142 Trans. Acad. Sci. of St. Louis 
Nucleocrinus lucina HALL. 
1862, State Cabinet Nat. History N. Y., 15th Report, p. 148, 
pl. 1, fig. 16. 
Hamilton Group; Livingston County, New York. 
Nucleocrinus lucina? HALL, MonTGOMERY. 
1881, aa Naturalist and Geologist, vol. 10, p. 80 (three 
uts). 
woo 
Nucleocrinus lucina Hai, RowLey. 
1904, Indiana Contributions to Paleontalogy, vol. 1, pt. 19, p. 
192, pl. 57, figs. 1 
Hamilton Group; Shenae Quarry, Clark County, Indiana. 
Nucleocrinus meloniformis Barris, THOMAS. 
1920, Iowa Geological Survey, vol. 29, pp. 428-431, pl. 36, figs. 
10-11. 
Cedar Valley limestone; Buffalo, Iowa. 
Nucleocrinus obovatus Barris, CLELAND. 
1911, Wisconsin Geological and Natural History Survey Bulletin 
No. 21, p. 43, pl. 3, fig. 2 
Hamilton formation; Milwaukee, Wisconsin. 
Nuceleocrinus obovatus Barris, THOMAS. 
1920, Iowa Geological Survey, vol. 29, pp. 423-428, pl. 36, figs. 
9, 16-17. 
Hamilton Group; Alpena, Michigan. 
Nucleocrinus stichteri Row ey. 
1902, Indiana Contributions to Paleontology, vol. 1, pt. 9, pp. 
83-84, pl. 27, figs. 9-11 
Devonian; Charlestown, Indiana. 
Nucleocrinus venustus MILLER and GURLEY. 
ioe Illinois State Museum oe Natural History, Bull. No. 3, 
ringfield, p. 63, pl. 6, figs. 26-30. 
Upper Helderberg Group; Yasue Kentucky, Columbus, 
io. 
Nucleocrinus venustus M. and G., ROWLEY. 
1902, Indiana Contributions to Paleontology, vol. 1, pt. 9, pp. 
82-83, figs. 5-8. 
Upper Devonian; Charlestown, eS 
Nucleocrinus verneuili Lyon and CAsseDAY. 
1859, Proceedings, American Academy, vol. 4, p. 295. 
