PLATE IL 
Fig. 1. MICHELINIA EUGENEAE White p. 95 
1. A corallum above the average size. Morrow formation, Station 
/ 301. 
Figs. 2, 2a. MICHELINIA EXILIMURA n. sp p. 96 
2, The corallum selected as the holotype. 2a. Longitudinal section 
of the same, showing the thin walls and comparatively thick 
tabulae which characterize the species. Morrow formation. 
Station 297. 
Figs. 3-4a. Crinoid plates p. 109 
3, 3a. Two views of a primibrachial plate of an unknown crinoid. 
Brentwood limestone. Station 147. 
4, 4a. Two views of a primibrachial plate. of an unknown crinoid, 
possibly a Delocrinus. Morrow formation. Station 301. 
Figs. 5-6a. HYDREIONOCRINUS sp p. 102 
5, 5a. Two views of a complete oral plate. Brentwood limestone. 
Station 147. 
6, 6a. Two views of a larger, but incomplete, oral plate. Morrow 
formation. Station 301. 
Figs. 7-9. EUPACHYCRINUS cf. MAGISTER Miller & Gurley p. 104 
7, External surface of a radial plate. 8. External surface of a 
basal plate. Morrow formation. Station 301. 
9. Internal surface of a radial plate. Brentwood limestone, Station 
152. 
Fig. 10. ARCHEOCIDARIS sp P- 
10. An incomplete spine showing the facet for attachment at the 
base. Brentwood limestone. Station 147. 
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