70 
SMITHSONIAN INSTITUTION 
Protaxocrinus robustus Springer 
Plate 22, figs. 6 , J 
springer, Crinoidea Flexibilia, 1920, p. 349, pi. 45, figs. 9-1 1. 
Beech River formation; Decatur County, Tennessee. 
GNORIMOCRINUS Wachsmnth and Springer 
Plate 22 
Gnorimocrinus Wachsmuth and Springer, Rev. Pal., i, 1879, p. 50. — Springer, Crinoidea Flexibilia, 1920, 
P- 353 - 
RA rhombic, obliquely to left of r. post. R. iBr few, rays wholly separated 
by iBr or perisome. Arms dichotomous. 
Genotype. Taxocrinns expansus Angelin. 
Distribution. Silurian; Gotland, America. 
Gnorimocrinus cirrifer Springer 
Plate 22, figs. 8 -io 
Springer, Crinoidea Flexibilia, 1920, p. 355, pi. 47, figs. 7-12. 
Beech River formation; Decatur County, Tennessee. 
Gnorimocrinus varians Springer 
Plate 22, figs, ii, iia 
Springer, Crinoidea Flexibilia, 1920, p. 356, pi. 47, figs. 13-17. 
Beech River formation; Decatur County, Tennessee. 
