126 Trans. Acad. Sci. of St. Louis 
Codaster canadensis BILLincs, HAMBACH. 
1903, Transactions, St. Louis Academy of Science, vol. 13, 
p. 48. 
Codaster gracillimus Row ey and Hare. 
189], The Kansas City Scientist, vol. 5, 9, a 2, figs. 6, 7. 
Lower Burlington limestone; Lomas oe 
Codaster gracillimus RowLey and Hare, ROWLEY. 
900, American Geologist, vol. 25, 1900, p. 66, pl. 2, figs. 6-8. 
Lower Burlington limestone; Louisiana, Pike County, Reepurl: 
Codaster gracillimus RowLey and Hare, Row.ey. 
1905, American Geologist, vol. 35, 1905, p. 307, pl. 21, figs. 31-32. 
Lower Burlington limestone; Louisiana, Pike County, Missouri. 
Codaster gracilis (WacHsmuTH), HAMBACH. 
1903, Transactions, St. Louis Academy of Science, vol. 13, p. 48. 
Codaster gracilis (WacusmuTH), THomas. 
1920, Iowa Geological Survey, vol. it 1920, pl. 36, figs. 13-14. 
Hamilton Croce? Alpena, Michig: 
Codaster grandis Row.ey and Hare. 
1891, The Kansas City Scientist, vol. ue 4 99, pl. 2, fig. 8. 
Upper Burlington, Louisiana, Misso 
Codaster grandis RowLey and Hare, oo 
1900, American Geologist, vol. 25, 1900, p. 66, pl. 2, figs. 9-11. 
Upper Burlington limestone; Louisiana, Pike County, Missouri. 
Codaster grandis Row ey and Hare, ROWLEY. 
1905, American Geologist, vol. 35, 1905, p. 309, pl. 21, figs. 
40-41. 
Upper Burlington limestone; Louisiana and Curryville, Mis- 
souri. 
Codaster gratiosus MILLer. 
1880, Cincinnati mgt of Natural History, Journal, vol. 2, 
p- 257, pl. 15, figs. 5- 
Keokuk Group; New aa Missouri. 
Codaster hindei SLocum. 
1906, Field Columbian Museum, Chicago, Geological Series, vol. 
2, No. 8, p. 263. 
Hamilton Group; Western New York. 
